Bump ruby/setup-ruby in the actions-patch-minor group (#470)

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


Updates `ruby/setup-ruby` from 1.302.0 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](ruby/setup-ruby@v1.302.0...v1.306.0)

---
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-patch-minor
...

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

Author: dependabot[bot]

.github/workflows/ci.yml

@@ -42,7 +42,7 @@ jobs:
     steps:
       - uses: actions/checkout@v6
       - name: Set up Ruby
-        uses: ruby/setup-ruby@v1.302.0
+        uses: ruby/setup-ruby@v1.306.0
         with:
           ruby-version: ${{ matrix.ruby-version }}
           bundler-cache: true