ci: use meaningful cron

Author: barmac

.github/workflows/CHECK_UPDATE.yml

@@ -2,7 +2,7 @@ name: CHECK_UPDATE
 on:
   workflow_dispatch:
   schedule:
-    - cron: '17 2 * * 0' # Every Sunday at 2:17 AM (random time to distribute load)
+    - cron: '17 9 * * 2' # Every Tuesday at 9:17 AM (random time to distribute load)
 jobs:
   build:
     strategy: