Updated workflow (#4172)

Author: sreichel

.github/workflows/codeql-analysis.yml

@@ -13,15 +13,8 @@ name: "CodeQL"
 
 on:
   workflow_call:
+  # Allow manually triggering the workflow.
   workflow_dispatch:
-  push:
-    branches: [ "main", "next", "v19" ]
-  pull_request:
-    # The branches below must be a subset of the branches above
-    branches: [ "main", "next", "v19" ]
-    paths-ignore:
-      - '**/*.md'
-      - '**/*.txt'
 
 jobs:
   analyze: