Update main.yml

.github/workflows/main.yml

@@ -1,7 +1,7 @@
 # This workflow uses actions that are not certified by GitHub.
 # They are provided by a third-party and are governed by
 # separate terms of service, privacy policy, and support
-documentation.
+# documentation.
 
 # Sample workflow for building and deploying a Jekyll site to GitHub Pages
 name: Deploy Jekyll site to Pages 2
@@ -34,10 +34,11 @@ jobs:
       - name: Checkout
         uses: actions/checkout@v4
       - name: Setup Ruby
-        uses: ruby/setup-ruby@v1
+        uses: ruby/setup-ruby@8575951200e472d5f2d95c625da0c7bec8217c42 # v1.161.0
         with:
           ruby-version: '3.1' # Not needed with a .ruby-version file
           bundler-cache: true # runs 'bundle install' and caches installed gems automatically
+          cache-version: 0 # Increment this number if you need to re-download cached gems
       - name: Setup Pages
         id: pages
         uses: actions/configure-pages@v4