Add cron test

Author: jormundur00

.github/workflows/ni-layers.yml

@@ -42,7 +42,8 @@ name: Weekly Native Image Layer Building Tests
 
 on:
   schedule:
-  - cron: "0 0 * * 1" # Once a week at midnight on Monday
+  #- cron: "0 0 * * 1" # Once a week at midnight on Monday
+  - cron: "20 * * * *" # At 20 minutes past the hour, for testing purposes
   push:
     paths:
       - '.github/workflows/ni-layers.yml'