Update trigger branch name to main.

Author: htorianik

.github/workflows/codeql-analysis.yml

@@ -3,10 +3,10 @@ name: CodeQL
 
 on:
   push:
-    branches: [master]
+    branches: [main]
   pull_request:
     # The branches below must be a subset of the branches above
-    branches: [master]
+    branches: [main]
   schedule:
     - cron: 0 18 * * 3