Posture check: GCP Service account is publicly accessible
Query: ```config from cloud.resource where cloud.type = 'gcp' AND api.name = 'gcloud-iam-service-accounts-list' AND json.rule = ( iamPolicy.bindings[*].members contains "allUsers" or iamPolicy.bindings[*].members contains "allAuthenticatedUsers" ) and ( disabled does not exist or disabled is false )```