Posture check: GCP PostgreSQL instance with log_checkpoints database flag is disabled
Query: ```config from cloud.resource where cloud.type = 'gcp' AND api.name = 'gcloud-sql-instances-list' AND json.rule = "databaseVersion contains POSTGRES and (settings.databaseFlags[?(@.name=='log_checkpoints')] does not exist or settings.databaseFlags[?(@.name=='log_checkpoints')].value equals off)"```