Doesn't seem to work with 1.21.11

[LinkZeldasGuard]

So I just upgraded my fabric server to Minecraft 1.21.11 and now the server crashes as soon as someone tries to join. Velocity is up to date and I tried removing the mod and Minecraft now did work as normal.

Here's a crash report from the server:

`Description: Exception in server tick loop

java.lang.NoSuchMethodError: 'boolean net.minecraft.class_2168.method_9259(int)'
at knot//de.michiruf.proxycommand.fabric.ProxyCommandMod.lambda$registerCommand$1(ProxyCommandMod.java:43)
at knot//com.mojang.brigadier.tree.CommandNode.canUse(CommandNode.java:65)
at knot//net.minecraft.class_2170.method_9239(class_2170.java:449)
at knot//net.minecraft.class_2170.method_9241(class_2170.java:443)
at knot//net.minecraft.class_3324.method_14596(class_3324.java:592)
at knot//net.minecraft.class_3324.method_14576(class_3324.java:489)
at knot//net.minecraft.class_3324.method_14570(class_3324.java:192)
at knot//net.minecraft.class_11549$class_11551.method_72305(class_11549.java:198)
at knot//net.minecraft.class_11549.method_72296(class_11549.java:91)
at knot//net.minecraft.class_8610.method_52408(class_8610.java:178)
at knot//net.minecraft.class_8736.method_53043(class_8736.java:22)
at knot//net.minecraft.class_8736.method_65081(class_8736.java:8)
at knot//net.minecraft.class_11980$class_11981.method_74450(class_11980.java:55)
at knot//net.minecraft.class_11980.method_74449(class_11980.java:38)
at knot//net.minecraft.server.MinecraftServer.method_76677(MinecraftServer.java:1047)
at knot//net.minecraft.server.MinecraftServer.method_29741(MinecraftServer.java:771)
at knot//net.minecraft.server.MinecraftServer.method_29739(MinecraftServer.java:301)
at java.base/java.lang.Thread.run(Thread.java:1583)`