Posture check: GCP MySQL instance database flag skip_show_database is not set to on
Query: ```config from cloud.resource where cloud.type = 'gcp' AND api.name = 'gcloud-sql-instances-list' AND json.rule = state equals RUNNABLE and databaseVersion contains MYSQL and (settings.databaseFlags[*].name does not contain skip_show_database or settings.databaseFlags[?any(name contains skip_show_database and value does not contain on)] exists)```