Schedule recurring CI cron job

This will have the benefit of catching when an upstream updated package
introduces a compatibility issue.

This cron job should trigger to leave notices for maintainers on the US
East Coast to see on their Tuesday mornings.

Signed-off-by: Alex Nelson <[email protected]>

Author: ajnelson-nist

.github/workflows/cicd.yml

@@ -23,6 +23,8 @@ on:
   release:
     types:
       - published
+  schedule:
+    - cron: '15 5 * * TUE'
 
 jobs:
   build: