Add installation of build dependencies in Jekyll deploy workflow

Author: jetzlstorfer

.github/workflows/jekyll-deploy.yml

@@ -33,6 +33,12 @@ jobs:
     steps:
       - name: Checkout
         uses: actions/checkout@v4
+
+      - name: Install build dependencies
+        run: |
+          sudo apt-get update
+          sudo apt-get install -y build-essential libffi-dev ruby-dev
+
       - name: Setup Ruby
         # https://github.com/ruby/setup-ruby/releases/tag/v1.207.0
         uses: ruby/setup-ruby@4a9ddd6f338a97768b8006bf671dfbad383215f4