Fixed docs

Author: Aigars Silkalns

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

@@ -30,7 +30,7 @@ jobs:
       - name: Setup Ruby
         uses: ruby/setup-ruby@v1
         with:
-          ruby-version: '3.1'
+          ruby-version: '3.3'
           bundler-cache: true
           working-directory: docs