This really should work.

Author: daveverwer

.github/workflows/ruby.yml

@@ -12,6 +12,8 @@ jobs:
     steps:
       - uses: actions/checkout@v2
       - uses: ruby/setup-ruby@v1
+        with:
+          bundler-cache: true
       - name: Validate JSON
         run: |
           bundle exec rake validate:json