Feature flag: enable cpp overlay flag override in config-cli workflow

Author: IdrissRio

.github/workflows/codescanning-config-cli.yml

@@ -11,6 +11,7 @@ env:
   CODEQL_ACTION_OVERLAY_ANALYSIS: true
   CODEQL_ACTION_OVERLAY_ANALYSIS_JAVASCRIPT: false
   CODEQL_ACTION_OVERLAY_ANALYSIS_CODE_SCANNING_JAVASCRIPT: true
+  CODEQL_ACTION_OVERLAY_ANALYSIS_CODE_SCANNING_CPP: true
   CODEQL_ACTION_OVERLAY_ANALYSIS_STATUS_CHECK: false
   CODEQL_ACTION_OVERLAY_ANALYSIS_SKIP_RESOURCE_CHECKS: true