Fully remove macos-11 since new builds will be on macos-12

.github/workflows/test.yml

@@ -17,7 +17,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        os: [ ubuntu-20.04, ubuntu-22.04, ubuntu-24.04, macos-11, macos-12, macos-13, macos-14, macos-arm-oss, windows-2019, windows-2022 ]
+        os: [ ubuntu-20.04, ubuntu-22.04, ubuntu-24.04, macos-12, macos-13, macos-14, macos-arm-oss, windows-2019, windows-2022 ]
         ruby: [
           '1.9', '2.0', '2.1', '2.2', '2.3', '2.4', '2.5', '2.6', '2.7', '3.0', '3.1', '3.2', '3.3', ruby-head,
           jruby, jruby-head,

CONTRIBUTING.md

@@ -24,3 +24,7 @@ $ cp pre-commit .git/hooks/pre-commit
 
 This is entirely automated now since [this issue](https://github.com/ruby/setup-ruby/issues/254).
 If you do not see a new version more than 24 hours after it was released feel free to file an issue.
+
+## Release
+
+Maintainers can create a release automatically by running [this workflow](https://github.com/ruby/setup-ruby/actions/workflows/release.yml).

README.md

@@ -43,7 +43,7 @@ The action works on these [GitHub-hosted runners](https://docs.github.com/en/act
 | Operating System | Supported |
 | ---------------- | --------- |
 | Ubuntu  | `ubuntu-20.04`, `ubuntu-22.04`, `ubuntu-24.04` |
-| macOS   | `macos-11`, `macos-12`, `macos-13`, `macos-14` |
+| macOS   | `macos-12`, `macos-13`, `macos-14` |
 | Windows | `windows-2019`, `windows-2022` |
 
 The prebuilt releases are generated by [ruby-builder](https://github.com/ruby/ruby-builder)

common.js

@@ -166,7 +166,6 @@ const GitHubHostedPlatforms = [
   'ubuntu-20.04-x64',
   'ubuntu-22.04-x64',
   'ubuntu-24.04-x64',
-  'macos-11-x64',
   'macos-12-x64',
   'macos-13-x64',
   'macos-13-arm64',

dist/index.js

@@ -526,7 +526,6 @@ const GitHubHostedPlatforms = [
   'ubuntu-20.04-x64',
   'ubuntu-22.04-x64',
   'ubuntu-24.04-x64',
-  'macos-11-x64',
   'macos-12-x64',
   'macos-13-x64',
   'macos-13-arm64',