Bump ruby/setup-ruby in the actions group across 1 directory

Bumps the actions group with 1 update in the / directory: [ruby/setup-ruby](https://github.com/ruby/setup-ruby).


Updates `ruby/setup-ruby` from 1.185.0 to 1.187.0
- [Release notes](https://github.com/ruby/setup-ruby/releases)
- [Changelog](https://github.com/ruby/setup-ruby/blob/master/release.rb)
- [Commits](ruby/setup-ruby@3a77c29...161cd54)

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

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

.github/workflows/ci.yml

@@ -38,7 +38,7 @@ jobs:
 
       - uses: actions/checkout@692973e3d937129bcbf40652eb9f2f61becf3332 # v4.1.7
       - name: Set up Ruby
-        uses: ruby/setup-ruby@3a77c29278ae80936b4cb030fefc7d21c96c786f # v1.185.0
+        uses: ruby/setup-ruby@161cd54b698f1fb3ea539faab2e036d409550e3c # v1.187.0
         with:
           ruby-version: ${{ matrix.ruby }}
           bundler-cache: true
@@ -96,7 +96,7 @@ jobs:
 
       - uses: actions/checkout@692973e3d937129bcbf40652eb9f2f61becf3332 # v4.1.7
       - name: Set up Ruby
-        uses: ruby/setup-ruby@3a77c29278ae80936b4cb030fefc7d21c96c786f # v1.185.0
+        uses: ruby/setup-ruby@161cd54b698f1fb3ea539faab2e036d409550e3c # v1.187.0
         with:
           ruby-version: "3.3.1"
           bundler-cache: true