Posture check: AWS NAT Gateways are not being utilized for the default route
Query: ```config from cloud.resource where cloud.type = 'aws' AND api.name = 'aws-ec2-describe-route-tables' AND json.rule = "routes[?(@.state == 'active' && @.instanceId)].destinationCidrBlock contains 0.0.0.0/0"```