change codeql scanning to once per day using a cron schedule instead …

…of on push as each run takes 2+ min

.github/workflows/codeql-analysis.yml

@@ -12,13 +12,13 @@
 name: "CodeQL"
 
 on:
-  push:
-    branches: [ main ]
+#  push:
+#    branches: [ main ]
 #  pull_request:
 #    # The branches below must be a subset of the branches above
 #    branches: [ main ]
-#  schedule:
-#    - cron: '16 2 * * 3'
+  schedule:
+    - cron: '16 2 * * *'
 
 jobs:
   analyze: