Bump ruby/setup-ruby from 1.185.0 to 1.187.0 (#1142)

Bumps [ruby/setup-ruby](https://github.com/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
...

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

Author: dependabot[bot]

.github/workflows/gh-pages.yml

@@ -22,7 +22,7 @@ jobs:
       - name: Checkout
         uses: actions/checkout@v4
       - name: Setup Ruby
-        uses: ruby/setup-ruby@3a77c29278ae80936b4cb030fefc7d21c96c786f # v1.185.0
+        uses: ruby/setup-ruby@161cd54b698f1fb3ea539faab2e036d409550e3c # v1.187.0
         with:
           ruby-version: '3.2'
           bundler-cache: true

.github/workflows/ruby-core.yml

@@ -22,7 +22,7 @@ jobs:
     timeout-minutes: 30
     steps:
       - name: Set up latest ruby head
-        uses: ruby/setup-ruby@3a77c29278ae80936b4cb030fefc7d21c96c786f # v1.185.0
+        uses: ruby/setup-ruby@161cd54b698f1fb3ea539faab2e036d409550e3c # v1.187.0
         with:
           ruby-version: head
           bundler: none