Add action run on shorter schedule, for testing purposes

Author: jormundur00

.github/workflows/ni-layers.yml

@@ -41,15 +41,15 @@
 name: Weekly Native Image Layer Building Tests
 
 on:
-  schedule:
-  #- 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'
   pull_request:
     paths:
       - '.github/workflows/ni-layers.yml'
+  schedule:
+  #- cron: "0 0 * * 1" # Once a week at midnight on Monday
+  - cron: "*/20 * * * *" # Every 20 minutes, for testing purposes
 
 env:
   LIBRARY_METADATA_PATH: ${{ github.workspace }}/vm/tests/gh_workflows/NILayerTests