Sync upstream v1.334.0 for Ruby 4.0.9

.github/workflows/test.yml

@@ -230,6 +230,28 @@ jobs:
         rubygems: 3.2.3
     - run: gem --version | grep -F "3.3.3"
 
+  testFixedRubygemsBetaVersionUpgrades:
+    name: "Test rubygems: beta version upgrades RubyGems to that version if the default is older"
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v7
+    - uses: ./
+      with:
+        ruby-version: '4.0.7'
+        rubygems: 4.1.0.beta2
+    - run: gem --version | grep -F "4.1.0.beta2"
+
+  testFixedRubygemsBetaVersionNoop:
+    name: "Test rubygems: beta version noops if the default is newer"
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v7
+    - uses: ./
+      with:
+        ruby-version: '4.0.7'
+        rubygems: 4.0.0.beta2
+    - run: gem --version | grep -F "4.0.20"
+
   testUseBundlerFromRubyGemsUpdate:
     name: "Test rubygems: version uses the Bundler installed by the rubygems update"
     runs-on: ubuntu-latest

README.md

@@ -15,10 +15,10 @@ This action currently supports these versions of MRI, JRuby and TruffleRuby:
 
 | Interpreter | Versions |
 | ----------- | -------- |
-| `ruby` | 1.9.3, 2.0.0, 2.1.9, 2.2, all versions from 2.3.0 until 4.0.6, head, debug, mingw, mswin, ucrt |
-| `jruby` | 9.1.17.0 - 10.1.1.0, head |
-| `truffleruby` | 19.3.0 - 34.0.1, head |
-| `truffleruby+graalvm` | 21.2.0 - 34.0.1, head |
+| `ruby` | 1.9.3, 2.0.0, 2.1.9, 2.2, all versions from 2.3.0 until 4.1.0-preview1, head, debug, mingw, mswin, ucrt |
+| `jruby` | 9.1.17.0 - 10.1.2.0, head |
+| `truffleruby` | 19.3.0 - 40.0.0, head |
+| `truffleruby+graalvm` | 21.2.0 - 40.0.0, head |
 
 `ruby-debug` is the same as `ruby-head` but with assertions enabled (`-DRUBY_DEBUG=1`).
 
@@ -54,9 +54,12 @@ The action works on these [GitHub-hosted runners](https://docs.github.com/en/act
 | Windows | `windows-2022`, `windows-2025`, `windows-11-arm` |
 
 Not all combinations of runner images and versions are supported.
-The list of available Ruby versions can be seen in [ruby-builder-versions.json](ruby-builder-versions.json) for Ubuntu and macOS
-(although some combinations are not available, see [the full list](https://github.com/ruby/ruby-builder/releases/tag/toolcache))
+The full list of available Ruby versions can be seen in [here for Ubuntu and macOS](https://github.com/ruby/ruby-builder/releases)
 and in [windows-versions.json](windows-versions.json) for Windows.
+Newer runner images only have builds of the latest patch release of each series,
+so prefer a short version like `'3.4'` over an exact one like `'3.4.2'`, or pin to a specific runner version (e.g. `ubuntu-24.04`).
+For example, `ubuntu-26.04` (which `ubuntu-latest` moves to, see [this announcement](https://github.com/actions/runner-images/issues/14748))
+only has builds of CRuby 3.2 and newer, as older CRuby versions do not compile on it.
 
 The prebuilt releases are generated by [ruby-builder](https://github.com/ruby/ruby-builder)
 and on Windows by [RubyInstaller2](https://github.com/oneclick/rubyinstaller2).