CompatHelper: bump compat for AlgebraicMultigrid in [weakdeps] to 2, (keep existing compat)

[github-actions]

This pull request changes the compat entry for the AlgebraicMultigrid package from 1 to 1, 2.
This keeps the compat entries for earlier versions.

Note: I have not tested your package with this new compat entry.
It is your responsibility to make sure that your package tests pass before you merge this pull request.

[github-actions]

Dagger benchmarks: dirty vs master

Median time

	master	dirty	master / dirty
array/dagger/N=1024 (block 512)/add (X + X)	4.36 ± 0.94 ms	3.77 ± 0.64 ms	1.16 ± 0.32
array/dagger/N=1024 (block 512)/alloc (rand)	2.44 ± 1.3 ms	2.47 ± 0.27 ms	0.988 ± 0.54
array/dagger/N=1024 (block 512)/broadcast (X .+ 1)	3.14 ± 0.84 ms	2.07 ± 0.97 ms	1.52 ± 0.82
array/dagger/N=1024 (block 512)/map (sin.(X))	5.5 ± 0.54 ms	6.43 ± 1.4 ms	0.855 ± 0.2
array/dagger/N=1024 (block 512)/norm	1.21 ± 0.03 ms	1.17 ± 0.65 ms	1.04 ± 0.58
array/dagger/N=1024 (block 512)/reduce (sum)	4.65 ± 4.3 ms	4.17 ± 2.2 ms	1.12 ± 1.2
array/dagger/N=1024 (block 512)/transpose (permutedims)	4.04 ± 0.39 ms	4.26 ± 0.92 ms	0.946 ± 0.22
array/dagger/N=256 (block 256)/add (X + X)	1.78 ± 0.29 ms	1.17 ± 0.19 ms	1.52 ± 0.35
array/dagger/N=256 (block 256)/alloc (rand)	0.707 ± 0.049 ms	0.657 ± 0.0052 ms	1.08 ± 0.075
array/dagger/N=256 (block 256)/broadcast (X .+ 1)	0.647 ± 0.63 ms	0.547 ± 0.16 ms	1.18 ± 1.2
array/dagger/N=256 (block 256)/map (sin.(X))	1.4 ± 0.8 ms	0.941 ± 0.13 ms	1.49 ± 0.88
array/dagger/N=256 (block 256)/norm	0.429 ± 0.088 ms	0.501 ± 0.099 ms	0.856 ± 0.24
array/dagger/N=256 (block 256)/reduce (sum)	0.582 ± 0.038 ms	0.593 ± 0.014 ms	0.982 ± 0.068
array/dagger/N=256 (block 256)/transpose (permutedims)	0.704 ± 0.044 ms	0.711 ± 0.012 ms	0.991 ± 0.064
linalg/dagger/N=1024 (block 512)/cholesky	24 ± 3 ms	22.5 ± 3.2 ms	1.06 ± 0.2
linalg/dagger/N=1024 (block 512)/lu	0.0437 ± 0.0037 s	0.0391 ± 0.0019 s	1.12 ± 0.11
linalg/dagger/N=1024 (block 512)/matmul (A*A)	0.0506 ± 0.019 s	0.0444 ± 0.0065 s	1.14 ± 0.45
linalg/dagger/N=1024 (block 512)/matvec (A*x)	3.12 ± 1.7 ms	4.4 ± 2 ms	0.709 ± 0.5
linalg/dagger/N=1024 (block 512)/qr	0.112 ± 0.0052 s	0.114 ± 0.0056 s	0.982 ± 0.066
linalg/dagger/N=1024 (block 512)/solve (A\b via lu)	0.0561 ± 0.00075 s	0.0548 ± 0.0062 s	1.02 ± 0.12
linalg/dagger/N=1024 (block 512)/svd	0.0358 h	0.0367 h	0.976
linalg/dagger/N=1024 (block 512)/syrk (A'*A)	0.0352 ± 0.0048 s	0.0402 ± 0.0049 s	0.875 ± 0.16
linalg/dagger/N=256 (block 256)/cholesky	2.83 ± 0.98 ms	4.61 ± 3.9 ms	0.615 ± 0.57
linalg/dagger/N=256 (block 256)/lu	4.63 ± 3.2 ms	5.28 ± 1.4 ms	0.878 ± 0.64
linalg/dagger/N=256 (block 256)/matmul (A*A)	2.45 ± 2.1 ms	2.63 ± 0.74 ms	0.93 ± 0.85
linalg/dagger/N=256 (block 256)/matvec (A*x)	0.924 ± 0.073 ms	1.55 ± 0.56 ms	0.597 ± 0.22
linalg/dagger/N=256 (block 256)/qr	4.94 ± 0.57 ms	4.64 ± 1.7 ms	1.06 ± 0.42
linalg/dagger/N=256 (block 256)/solve (A\b via lu)	7.92 ± 3.7 ms	17.4 ± 8.4 ms	0.456 ± 0.31
linalg/dagger/N=256 (block 256)/svd	0.505 ± 0.034 s	0.588 ± 0.0024 s	0.859 ± 0.058
linalg/dagger/N=256 (block 256)/syrk (A'*A)	4.4 ± 1.2 ms	5.74 ± 1.9 ms	0.767 ± 0.33
sparse/dagger/N=1024 (block 64)/cg solve (laplacian)	0.856 ± 0.035 s	0.898 ± 0.019 s	0.953 ± 0.044
sparse/dagger/N=1024 (block 64)/spgemm (S*S)	0.474 ± 0.013 s	0.48 ± 0.0099 s	0.986 ± 0.034
sparse/dagger/N=1024 (block 64)/spmv (S*x)	0.0497 ± 0.013 s	0.0526 ± 0.023 s	0.945 ± 0.48
sparse/dagger/N=256 (block 16)/cg solve (laplacian)	0.921 ± 0.011 s	0.944 ± 0.011 s	0.976 ± 0.016
sparse/dagger/N=256 (block 16)/spgemm (S*S)	0.439 ± 0.019 s	0.478 ± 0.0089 s	0.917 ± 0.043
sparse/dagger/N=256 (block 16)/spmv (S*x)	0.0603 ± 0.016 s	0.0765 ± 0.013 s	0.789 ± 0.24
stencil/dagger/N=1024 (block 512)/alloc (neighbors Wrap)	7.81 ± 1.3 ms	6.71 ± 0.75 ms	1.16 ± 0.24
stencil/dagger/N=1024 (block 512)/assign (const)	0.998 ± 1.1 ms	1.18 ± 0.48 ms	0.847 ± 0.96
stencil/dagger/N=1024 (block 512)/multi-expr	3.08 ± 2.6 ms	5.02 ± 0.34 ms	0.613 ± 0.52
stencil/dagger/N=1024 (block 512)/neighbors (Clamp)	5.99 ± 0.25 ms	5.29 ± 1 ms	1.13 ± 0.22
stencil/dagger/N=1024 (block 512)/neighbors (Pad)	5.31 ± 0.34 ms	5.86 ± 0.65 ms	0.905 ± 0.12
stencil/dagger/N=1024 (block 512)/neighbors (Reflect)	5.69 ± 0.22 ms	6.01 ± 0.27 ms	0.947 ± 0.055
stencil/dagger/N=1024 (block 512)/neighbors (Wrap)	7.78 ± 2.3 ms	7.37 ± 0.7 ms	1.06 ± 0.32
stencil/dagger/N=1024 (block 512)/update (+)	1.54 ± 1.8 ms	1.52 ± 0.041 ms	1.02 ± 1.2
stencil/dagger/N=256 (block 256)/alloc (neighbors Wrap)	1.85 ± 0.42 ms	1.83 ± 0.024 ms	1.01 ± 0.23
stencil/dagger/N=256 (block 256)/assign (const)	0.53 ± 0.026 ms	0.508 ± 0.029 ms	1.04 ± 0.079
stencil/dagger/N=256 (block 256)/multi-expr	1.2 ± 0.37 ms	0.963 ± 0.27 ms	1.25 ± 0.52
stencil/dagger/N=256 (block 256)/neighbors (Clamp)	1.33 ± 0.015 ms	1.41 ± 0.2 ms	0.948 ± 0.13
stencil/dagger/N=256 (block 256)/neighbors (Pad)	1.63 ± 0.36 ms	1.28 ± 0.17 ms	1.27 ± 0.32
stencil/dagger/N=256 (block 256)/neighbors (Reflect)	1.41 ± 0.088 ms	2.23 ± 0.71 ms	0.634 ± 0.21
stencil/dagger/N=256 (block 256)/neighbors (Wrap)	1.26 ± 0.098 ms	1.33 ± 0.23 ms	0.945 ± 0.18
stencil/dagger/N=256 (block 256)/update (+)	0.882 ± 0.25 ms	0.875 ± 0.24 ms	1.01 ± 0.4
time_to_load	1.09 ± 0.014 s	1.08 ± 0.0032 s	1 ± 0.013

Allocations / memory

	master	dirty	master / dirty
array/dagger/N=1024 (block 512)/add (X + X)	5.59 k allocs: 8.22 MB	5.57 k allocs: 8.22 MB	1
array/dagger/N=1024 (block 512)/alloc (rand)	2.73 k allocs: 8.09 MB	2.76 k allocs: 8.09 MB	1
array/dagger/N=1024 (block 512)/broadcast (X .+ 1)	2.43 k allocs: 8.08 MB	2.39 k allocs: 8.08 MB	1
array/dagger/N=1024 (block 512)/map (sin.(X))	2.1 k allocs: 8.07 MB	2.1 k allocs: 8.07 MB	1
array/dagger/N=1024 (block 512)/norm	2.69 k allocs: 0.0896 MB	2.69 k allocs: 0.0896 MB	1
array/dagger/N=1024 (block 512)/reduce (sum)	4.11 k allocs: 0.141 MB	4.54 k allocs: 0.157 MB	0.901
array/dagger/N=1024 (block 512)/transpose (permutedims)	3.33 k allocs: 8.14 MB	3.33 k allocs: 8.14 MB	1
array/dagger/N=256 (block 256)/add (X + X)	1.71 k allocs: 0.574 MB	1.72 k allocs: 0.574 MB	1
array/dagger/N=256 (block 256)/alloc (rand)	0.754 k allocs: 0.526 MB	0.754 k allocs: 0.526 MB	1
array/dagger/N=256 (block 256)/broadcast (X .+ 1)	0.64 k allocs: 0.522 MB	0.651 k allocs: 0.522 MB	0.999
array/dagger/N=256 (block 256)/map (sin.(X))	0.574 k allocs: 0.52 MB	0.574 k allocs: 0.52 MB	1
array/dagger/N=256 (block 256)/norm	0.704 k allocs: 24.2 kB	0.704 k allocs: 24.2 kB	1
array/dagger/N=256 (block 256)/reduce (sum)	0.816 k allocs: 30.5 kB	0.817 k allocs: 30.5 kB	0.998
array/dagger/N=256 (block 256)/transpose (permutedims)	1.09 k allocs: 0.551 MB	1.09 k allocs: 0.551 MB	1
linalg/dagger/N=1024 (block 512)/cholesky	7.78 k allocs: 10.3 MB	7.84 k allocs: 10.3 MB	1
linalg/dagger/N=1024 (block 512)/lu	15.7 k allocs: 14.6 MB	15.6 k allocs: 14.6 MB	1
linalg/dagger/N=1024 (block 512)/matmul (A*A)	7.77 k allocs: 8.29 MB	7.69 k allocs: 8.28 MB	1
linalg/dagger/N=1024 (block 512)/matvec (A*x)	6.22 k allocs: 0.248 MB	6.11 k allocs: 0.244 MB	1.02
linalg/dagger/N=1024 (block 512)/qr	11.4 k allocs: 9.59 MB	11.9 k allocs: 9.61 MB	0.998
linalg/dagger/N=1024 (block 512)/solve (A\b via lu)	29.6 k allocs: 15.2 MB	29.8 k allocs: 15.2 MB	1
linalg/dagger/N=1024 (block 512)/svd	0.0499 M allocs: 0.197 GB	0.0504 M allocs: 0.198 GB	1
linalg/dagger/N=1024 (block 512)/syrk (A'*A)	9.13 k allocs: 20.4 MB	9.14 k allocs: 20.4 MB	1
linalg/dagger/N=256 (block 256)/cholesky	3.07 k allocs: 0.635 MB	3.03 k allocs: 0.634 MB	1
linalg/dagger/N=256 (block 256)/lu	5.4 k allocs: 1.24 MB	5.41 k allocs: 1.24 MB	1
linalg/dagger/N=256 (block 256)/matmul (A*A)	1.93 k allocs: 0.582 MB	1.93 k allocs: 0.582 MB	1
linalg/dagger/N=256 (block 256)/matvec (A*x)	2.44 k allocs: 0.104 MB	2.35 k allocs: 0.0991 MB	1.05
linalg/dagger/N=256 (block 256)/qr	3.44 k allocs: 0.779 MB	3.45 k allocs: 0.779 MB	1
linalg/dagger/N=256 (block 256)/solve (A\b via lu)	12 k allocs: 1.53 MB	11.9 k allocs: 1.53 MB	1
linalg/dagger/N=256 (block 256)/svd	15.5 k allocs: 6.71 MB	15.5 k allocs: 6.71 MB	1
linalg/dagger/N=256 (block 256)/syrk (A'*A)	3.06 k allocs: 2.14 MB	3.07 k allocs: 2.14 MB	1
sparse/dagger/N=1024 (block 64)/cg solve (laplacian)	2.98 M allocs: 0.11 GB	2.91 M allocs: 0.108 GB	1.02
sparse/dagger/N=1024 (block 64)/spgemm (S*S)	2.99 M allocs: 0.144 GB	3.14 M allocs: 0.15 GB	0.963
sparse/dagger/N=1024 (block 64)/spmv (S*x)	0.193 M allocs: 7.33 MB	0.174 M allocs: 6.65 MB	1.1
sparse/dagger/N=256 (block 16)/cg solve (laplacian)	3.11 M allocs: 0.115 GB	2.99 M allocs: 0.111 GB	1.04
sparse/dagger/N=256 (block 16)/spgemm (S*S)	2.94 M allocs: 0.107 GB	3.29 M allocs: 0.118 GB	0.91
sparse/dagger/N=256 (block 16)/spmv (S*x)	0.197 M allocs: 7.46 MB	0.21 M allocs: 7.88 MB	0.947
stencil/dagger/N=1024 (block 512)/alloc (neighbors Wrap)	4.82 k allocs: 8.2 MB	4.81 k allocs: 8.2 MB	1
stencil/dagger/N=1024 (block 512)/assign (const)	2.15 k allocs: 0.0942 MB	2.17 k allocs: 0.0947 MB	0.995
stencil/dagger/N=1024 (block 512)/multi-expr	4.77 k allocs: 0.21 MB	4.83 k allocs: 0.212 MB	0.99
stencil/dagger/N=1024 (block 512)/neighbors (Clamp)	3.83 k allocs: 0.233 MB	3.83 k allocs: 0.232 MB	1
stencil/dagger/N=1024 (block 512)/neighbors (Pad)	3.71 k allocs: 0.229 MB	3.7 k allocs: 0.229 MB	1
stencil/dagger/N=1024 (block 512)/neighbors (Reflect)	3.81 k allocs: 0.264 MB	3.79 k allocs: 0.263 MB	1
stencil/dagger/N=1024 (block 512)/neighbors (Wrap)	3.64 k allocs: 0.167 MB	3.63 k allocs: 0.166 MB	1
stencil/dagger/N=1024 (block 512)/update (+)	2.64 k allocs: 0.117 MB	2.6 k allocs: 0.115 MB	1.02
stencil/dagger/N=256 (block 256)/alloc (neighbors Wrap)	1.56 k allocs: 0.575 MB	1.56 k allocs: 0.575 MB	1
stencil/dagger/N=256 (block 256)/assign (const)	0.806 k allocs: 0.041 MB	0.778 k allocs: 0.0399 MB	1.03
stencil/dagger/N=256 (block 256)/multi-expr	1.75 k allocs: 0.0882 MB	1.73 k allocs: 0.0874 MB	1.01
stencil/dagger/N=256 (block 256)/neighbors (Clamp)	1.33 k allocs: 0.574 MB	1.26 k allocs: 0.0718 MB	7.99
stencil/dagger/N=256 (block 256)/neighbors (Pad)	1.21 k allocs: 0.0703 MB	1.21 k allocs: 0.0704 MB	0.999
stencil/dagger/N=256 (block 256)/neighbors (Reflect)	1.26 k allocs: 0.0792 MB	1.26 k allocs: 0.0792 MB	1
stencil/dagger/N=256 (block 256)/neighbors (Wrap)	1.2 k allocs: 0.0629 MB	1.2 k allocs: 0.0625 MB	1.01
stencil/dagger/N=256 (block 256)/update (+)	0.924 k allocs: 0.0463 MB	0.924 k allocs: 0.0463 MB	1
time_to_load	0.147 k allocs: 10.8 kB	0.147 k allocs: 10.8 kB	1

Plots

⚠️ Regressions (time > 25.0% and outside the reported ±spread; allocs/memory > 25.0%)

• stencil/dagger/N=256 (block 256)/neighbors (Reflect) (time): +57.7%

Improvements

• stencil/dagger/N=256 (block 256)/neighbors (Clamp) (memory): -87.5%
• array/dagger/N=256 (block 256)/add (X + X) (time): -34.3%

Within noise (9 metric(s) past threshold but inside the ±spread; not counted)

• linalg/dagger/N=256 (block 256)/solve (A\b via lu) (time): 119.3%
• linalg/dagger/N=256 (block 256)/matvec (A*x) (time): 67.5%
• stencil/dagger/N=1024 (block 512)/multi-expr (time): 63.1%
• linalg/dagger/N=256 (block 256)/cholesky (time): 62.6%
• linalg/dagger/N=1024 (block 512)/matvec (A*x) (time): 41.1%
• linalg/dagger/N=256 (block 256)/syrk (A'*A) (time): 30.4%
• sparse/dagger/N=256 (block 16)/spmv (S*x) (time): 26.7%
• array/dagger/N=256 (block 256)/map (sin.(X)) (time): -32.9%
• array/dagger/N=1024 (block 512)/broadcast (X .+ 1) (time): -34.1%

Full results and plots (download the benchmark-results artifact).