Fixes setup-ruby

Author: infews

.github/workflows/jekyll-gh-pages.yml

@@ -29,7 +29,7 @@ jobs:
       - name: Checkout
         uses: actions/checkout@v4
       - name: Setup Ruby
-        uses: ruby/setup-ruby
+        uses: ruby/setup-ruby@v1
         with:
 #          ruby-version: '3.3.6' # Not needed with a .ruby-version file
           bundler-cache: true # runs 'bundle install' and caches installed gems automatically