Remove test cron job and schedule workflow for the 27th monthly.

.github/workflows/setupOpenLibertyAks.yml

@@ -26,8 +26,7 @@ on:
         default: false
   repository_dispatch:
   schedule:
-#    - cron: '0 0 27 * *' # run the workflow at the end of 27th monthly.
-    - cron: '*/5 * * * *'  # This will run every 5 minutes, only used for test
+    - cron: '0 0 27 * *' # run the workflow at the end of 27th monthly.
 
 env:
   refArmttk: c11a62d4ae011ee96fdecc76d76d811c5b5a99ce