Bump ruby/setup-ruby from 1.314.0 to 1.321.0 (#4874)

Bumps [ruby/setup-ruby](https://github.com/ruby/setup-ruby) from 1.314.0 to 1.321.0.
- [Release notes](https://github.com/ruby/setup-ruby/releases)
- [Changelog](https://github.com/ruby/setup-ruby/blob/master/release.rb)
- [Commits](9eb537ca03...95ef2b042f)

---
updated-dependencies:
- dependency-name: ruby/setup-ruby
  dependency-version: 1.321.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

.github/workflows/linux.yml

@@ -28,7 +28,7 @@ jobs:
         go-version: "1.23"
 
     - name: Setup Ruby
-      uses: ruby/setup-ruby@9eb537ca036ebaed86729dcb9309076e4c5c3b74 # v1
+      uses: ruby/setup-ruby@95ef2b042f9d7a56d8268cba8559e2842e2ad01b # v1
       with:
         ruby-version: 3.4.6
 

.github/workflows/macos.yml

@@ -25,7 +25,7 @@ jobs:
         go-version: "1.23"
 
     - name: Setup Ruby
-      uses: ruby/setup-ruby@9eb537ca036ebaed86729dcb9309076e4c5c3b74 # v1
+      uses: ruby/setup-ruby@95ef2b042f9d7a56d8268cba8559e2842e2ad01b # v1
       with:
         ruby-version: 3.0.0