chore: enable only as a cron

Author: honzajavorek

.github/workflows/test-academy.yml

@@ -1,13 +1,9 @@
 name: Test Academy
 
 on:
-    # TODO, this is just temporary:
-    push:
-        branches: [ "honzajavorek/test-exercises" ]
-
-    # schedule:
-    #     - cron: "0 3 * * 1"  # at 3am UTC on Mondays
-    # workflow_dispatch:  # allows running this workflow manually from the Actions tab
+    schedule:
+        - cron: "0 3 * * 1"  # at 3am UTC on Mondays
+    workflow_dispatch:  # allows running this workflow manually from the Actions tab
 
 jobs:
     test-exercises: