Bump ruby/setup-ruby from 1.202.0 to 1.207.0 (#128)

Bumps [ruby/setup-ruby](https://github.com/ruby/setup-ruby) from 1.202.0 to 1.207.0.
- [Release notes](https://github.com/ruby/setup-ruby/releases)
- [Changelog](https://github.com/ruby/setup-ruby/blob/master/release.rb)
- [Commits](ruby/setup-ruby@a2bbe5b...4a9ddd6)

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

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

Author: dependabot[bot]

.github/workflows/rubocop.yml

@@ -16,7 +16,7 @@ jobs:
         uses: actions/checkout@692973e3d937129bcbf40652eb9f2f61becf3332
 
       - name: Set up Ruby
-        uses: ruby/setup-ruby@a2bbe5b1b236842c1cb7dd11e8e3b51e0a616acc
+        uses: ruby/setup-ruby@4a9ddd6f338a97768b8006bf671dfbad383215f4
         with:
           ruby-version: .ruby-version