Bump ruby/setup-ruby from 1.215.0 to 1.218.0 (#5073)

Bumps [ruby/setup-ruby](https://github.com/ruby/setup-ruby) from 1.215.0 to 1.218.0.
- [Release notes](https://github.com/ruby/setup-ruby/releases)
- [Changelog](https://github.com/ruby/setup-ruby/blob/master/release.rb)
- [Commits](ruby/setup-ruby@2654679...d781c1b)

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

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

.github/workflows/cleanup-stale-projects.yml

@@ -17,7 +17,7 @@ jobs:
       - name: Checkout
         uses: actions/checkout@v4
       - name: Setup Ruby
-        uses: ruby/setup-ruby@2654679fe7f7c29875c669398a8ec0791b8a64a1
+        uses: ruby/setup-ruby@d781c1b4ed31764801bfae177617bb0446f5ef8d
         with:
           bundler-cache: true
 

.github/workflows/continuous-integration.yml

@@ -36,7 +36,7 @@ jobs:
     steps:
       - uses: actions/checkout@v4
       - name: Set up Ruby
-        uses: ruby/setup-ruby@2654679fe7f7c29875c669398a8ec0791b8a64a1
+        uses: ruby/setup-ruby@d781c1b4ed31764801bfae177617bb0446f5ef8d
       - name: Build and test Jekyll site
         run: |
           bundle install

.github/workflows/jekyll.yml

@@ -21,7 +21,7 @@ jobs:
       - name: Checkout
         uses: actions/checkout@v4
       - name: Setup Ruby
-        uses: ruby/setup-ruby@2654679fe7f7c29875c669398a8ec0791b8a64a1
+        uses: ruby/setup-ruby@d781c1b4ed31764801bfae177617bb0446f5ef8d
         with:
           bundler-cache: true
       - name: Setup Pages

.github/workflows/review-project-changes.yml

@@ -14,7 +14,7 @@ jobs:
         with:
           ref: gh-pages
       - name: Setup Ruby
-        uses: ruby/setup-ruby@2654679fe7f7c29875c669398a8ec0791b8a64a1
+        uses: ruby/setup-ruby@d781c1b4ed31764801bfae177617bb0446f5ef8d
         with:
           bundler-cache: true
 

.github/workflows/update-project-stats-scheduled.yml

@@ -17,7 +17,7 @@ jobs:
           token: ${{ secrets.SHIFTBOT_TOKEN }}
 
       - name: Setup Ruby
-        uses: ruby/setup-ruby@2654679fe7f7c29875c669398a8ec0791b8a64a1
+        uses: ruby/setup-ruby@d781c1b4ed31764801bfae177617bb0446f5ef8d
         with:
           bundler-cache: true
           cache-version: 0