Try some jekyll fixes (#349)

* install some deps for ruby;

* Add cache back, it didnt make any difference

Author: fraz3alpha

.github/workflows/build-staging-website.yml

@@ -47,10 +47,20 @@ jobs:
           cat website/_config.yml
         shell: bash
 
+      # Install some dependencies to try and fix Ruby randomly crashing
+      # Taken from https://github.com/sass/sassc-ruby/issues/146#issuecomment-771042986
+      - name: Install some dependencies for Ruby
+        run: |
+          set -x \
+          && sudo apt update \
+          && sudo apt install -y --no-install-recommends \
+          libffi-dev
+        shell: bash
+
       - name: 🔨 install dependencies & build site
         uses: limjh16/jekyll-action-ts@v2
         with:
-          enable_cache: false
+          enable_cache: true
           jekyll_src: website
 
       # Then we need to prune any directories that don't match to currently active branches