Bump ruby/setup-ruby from 1.118.0 to 1.120.0

Bumps [ruby/setup-ruby](https://github.com/ruby/setup-ruby) from 1.118.0 to 1.120.0.
- [Release notes](https://github.com/ruby/setup-ruby/releases)
- [Commits](ruby/setup-ruby@eae4796...ece8276)

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

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

.github/workflows/exercise-tests.yml

@@ -22,7 +22,7 @@ jobs:
       - uses: actions/checkout@v3
 
       - name: Set up Ruby
-        uses: ruby/setup-ruby@eae47962baca661befdfd24e4d6c34ade04858f7
+        uses: ruby/setup-ruby@ece82769428359c077b5a5eaff268902a303c101
         with:
           ruby-version: ${{ matrix.ruby-version }}
           bundler-cache: true