chore: Change master branch references to main (#474)

Author: platinumazure

.github/workflows/ci.yml

@@ -6,7 +6,7 @@ name: CI
 on:
   push:
   pull_request:
-    branches: [ master ]
+    branches: [ main ]
 
 jobs:
   build:

.github/workflows/codeql.yml

@@ -13,10 +13,10 @@ 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: '32 15 * * 2'