don't run on weekends

Author: rustyjux

.github/workflows/pr-reminder.yaml

@@ -1,7 +1,7 @@
 name: 'Send review reminders'
 on:
   schedule:
-    - cron: '30 1 * * *' # Scheduled to run at 1:30 AM daily
+    - cron: '30 1 * * 1-5' # Scheduled to run at 1:30 AM, Monday through Friday
   workflow_dispatch: # Allows manual triggering of the workflow
 
 jobs: