Apply consistent YAML formatting

.github/workflows/__ruby.yml

@@ -17,7 +17,7 @@ on:
     types:
       - checks_requested
   schedule:
-    - cron: '0 5 * * *'
+    - cron: "0 5 * * *"
   workflow_dispatch:
     inputs: {}
   workflow_call:
@@ -61,8 +61,8 @@ jobs:
         uses: ./.github/actions/prepare-test
         with:
           version: ${{ matrix.version }}
-          use-all-platform-bundle: 'false'
-          setup-kotlin: 'true'
+          use-all-platform-bundle: "false"
+          setup-kotlin: "true"
       - uses: ./../action/init
         with:
           languages: ruby