chore(deps): bump ruby/setup-ruby in /.github/actions/setup

Bumps [ruby/setup-ruby](https://github.com/ruby/setup-ruby) from 1.258.0 to 1.259.0.
- [Release notes](https://github.com/ruby/setup-ruby/releases)
- [Changelog](https://github.com/ruby/setup-ruby/blob/master/release.rb)
- [Commits](ruby/setup-ruby@3fee676...866b91c)

---
updated-dependencies:
- dependency-name: ruby/setup-ruby
  dependency-version: 1.259.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

.github/actions/setup/action.yml

@@ -15,7 +15,7 @@ runs:
 
   steps:
     - name: Set up Ruby
-      uses: ruby/setup-ruby@3fee6763234110473bd57dd4595c5199fce2c510 # pin@v1.258.0
+      uses: ruby/setup-ruby@866b91cc020931c510d42e43e498a7f07d335f60 # pin@v1.259.0
       with:
         ruby-version: ${{ inputs.ruby }}
         bundler-cache: true