The workflow is not valid. .github/workflows/repo-sync.yml (Line: 20, Col: 3): The identifier 'linux-6.6.y' is invalid. IDs may only contain alphanumeric characters, '_', and '-'. IDs must start with a letter or '_' and and must be less than 100 characters. .github/workflows/repo-sync.yml (Line: 33, Col: 3): The identifier 'linux-6.1.y' is invalid. IDs may only contain alphanumeric characters, '_', and '-'. IDs must start with a letter or '_' and and must be less than 100 characters.