simplify codeql run

Signed-off-by: Olivier Lamy <[email protected]>

Author: olamy

.github/workflows/codeql.yml

@@ -1,3 +1,13 @@
+name: "CodeQL"
+
+on:
+  push:
+    branches: [ "master" ]
+  pull_request:
+    branches: [ "master" ]
+  schedule:
+    - cron: '33 4 * * 1'
+
 permissions:
   contents: read