Cache built dependencies

Author: parmjotsinghrobot

.github/workflows/build-jekyll.yml

@@ -17,9 +17,11 @@ jobs:
           fetch-depth: 2147483647
 
       # Use GitHub Actions' cache to cache dependencies on servers
-      - uses: actions/cache@v2
+      - uses: actions/cache@v4
         with:
-          path: vendor/bundle
+          path: |
+            .asdf/**
+            vendor/bundle
           key: ${{ runner.os }}-gems-${{ hashFiles('**/Gemfile.lock') }}
           restore-keys: |
             ${{ runner.os }}-gems-