Bump ruby/setup-ruby from 1.305.0 to 1.306.0

Bumps [ruby/setup-ruby](https://github.com/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](ruby/setup-ruby@0cb964f...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>

Author: dependabot[bot]

.github/workflows/build.yml

@@ -43,7 +43,7 @@ jobs:
 
       - name: Set up Ruby
         if: ${{ matrix.platform != 'windows-latest' }}
-        uses: ruby/setup-ruby@0cb964fd540e0a24c900370abf38a33466142735  #v1.305.0
+        uses: ruby/setup-ruby@c4e5b1316158f92e3d49443a9d58b31d25ac0f8f  #v1.306.0
         with:
           ruby-version: 3.3 # See also devcontainer