Bump ruby/setup-ruby from 1.299.0 to 1.306.0 (#111)

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](ruby/setup-ruby@3ff19f5...c4e5b13)

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

Author: dependabot[bot]

.github/workflows/rubocop.yml

@@ -15,7 +15,7 @@ jobs:
         uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd
 
       - name: Set up Ruby
-        uses: ruby/setup-ruby@3ff19f5e2baf30647122352b96108b1fbe250c64
+        uses: ruby/setup-ruby@c4e5b1316158f92e3d49443a9d58b31d25ac0f8f
         with:
           ruby-version: .ruby-version
           bundler-cache: true

.github/workflows/tests.yml

@@ -18,7 +18,7 @@ jobs:
         uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd
 
       - name: Setup Ruby
-        uses: ruby/setup-ruby@3ff19f5e2baf30647122352b96108b1fbe250c64
+        uses: ruby/setup-ruby@c4e5b1316158f92e3d49443a9d58b31d25ac0f8f
         with:
           ruby-version: .ruby-version
           bundler-cache: true