Bump ruby/setup-ruby from 1.299.0 to 1.306.0

Bumps [ruby/setup-ruby](https://github.com/ruby/setup-ruby) from 1.299.0 to 1.306.0.
- [Release notes](https://github.com/ruby/setup-ruby/releases)
- [Changelog](https://github.com/ruby/setup-ruby/blob/master/release.rb)
- [Commits](https://github.com/ruby/setup-ruby/compare/3ff19f5e2baf30647122352b96108b1fbe250c64...c4e5b1316158f92e3d49443a9d58b31d25ac0f8f)

---
updated-dependencies:
- dependency-name: ruby/setup-ruby
  dependency-version: 1.306.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

.github/workflows/linux.yml

@@ -28,7 +28,7 @@ jobs:
         go-version: "1.23"
 
     - name: Setup Ruby
-      uses: ruby/setup-ruby@3ff19f5e2baf30647122352b96108b1fbe250c64 # v1
+      uses: ruby/setup-ruby@c4e5b1316158f92e3d49443a9d58b31d25ac0f8f # 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@3ff19f5e2baf30647122352b96108b1fbe250c64 # v1
+      uses: ruby/setup-ruby@c4e5b1316158f92e3d49443a9d58b31d25ac0f8f # v1
       with:
         ruby-version: 3.0.0