Posture check: GCP VPC Flow logs for the subnet is set to Off
Query: ```config from cloud.resource where cloud.type = 'gcp' AND api.name = 'gcloud-compute-networks-subnets-list' AND json.rule = purpose does not contain INTERNAL_HTTPS_LOAD_BALANCER and purpose does not contain REGIONAL_MANAGED_PROXY and purpose does not contain GLOBAL_MANAGED_PROXY and purpose does not contain PRIVATE_SERVICE_CONNECT and (enableFlowLogs is false or enableFlowLogs does not exist)```