Update codebuild-ci.yml (#5393)

Author: nargokul

.github/workflows/codebuild-ci.yml

@@ -2,7 +2,7 @@ name: PR Checks
 on:
     pull_request_target:
         branches:
-            - "master*"
+            - "master-v2"
 
 concurrency:
     group: ${{ github.workflow }}-${{ github.event.pull_request.number || github.head_ref }}