Posture check: GCP VM instance with Shielded VM Secure Boot disabled
Query: ```config from cloud.resource where cloud.type = 'gcp' AND api.name = 'gcloud-compute-instances-list' AND json.rule = status equals RUNNING and name does not start with "gke-" and (shieldedInstanceConfig does not exist or shieldedInstanceConfig.enableSecureBoot is false )```