Bump ruby/setup-ruby

Bumps the actions-minor group with 1 update in the /.github/workflows directory: [ruby/setup-ruby](https://github.com/ruby/setup-ruby).


Updates `ruby/setup-ruby` from 1.305.0 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/0cb964fd540e0a24c900370abf38a33466142735...c4e5b1316158f92e3d49443a9d58b31d25ac0f8f)

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

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

.github/workflows/__rubocop-multi-language.yml

@@ -59,7 +59,7 @@ jobs:
           use-all-platform-bundle: 'false'
           setup-kotlin: 'true'
       - name: Set up Ruby
-        uses: ruby/setup-ruby@0cb964fd540e0a24c900370abf38a33466142735 # v1.305.0
+        uses: ruby/setup-ruby@c4e5b1316158f92e3d49443a9d58b31d25ac0f8f # v1.306.0
         with:
           ruby-version: 2.6
       - name: Install Code Scanning integration