Run CI daily around midnight

Author: jesserockz

.github/workflows/ci.yml

@@ -5,6 +5,8 @@ on:
     paths:
       - '*.yaml'
       - '.github/workflows/ci.yml'
+  schedule:
+    - cron: '0 0 * * *'
 
 concurrency:
   group: ${{ github.workflow }}-${{ github.event.pull_request.number }}