tweaks

if args.verbose:

    print("\n")

    print(">>> `dag_group_run` :")

    print(f"\t- {dag_group_run}")

    print(f"\t- {json.dumps(dag_group_run, separators=(',', ':'))}")

    print(f">>> `dag_run_list` : [ {n_dag_run_success} / {n_dag_run_all} ]")

    if len(dag_run_list) > 0:

        for dag_run in dag_run_list: