[Bug Fix] (config) Fix the issue about incorrect value-format at option 'flags' of codecov action.

Author: Chisanan232

.github/workflows/test-reusable-workflows.yaml

@@ -93,7 +93,7 @@ jobs:
       codecov_token: ${{ secrets.CODECOV_TOKEN }}
     with:
       download_path: ./
-      codecov_flags: unit, integration
+      codecov_flags: unit,integration
       codecov_name: smoothcrawler-appintegration_github-actions_test # optional