Posture check: AWS SNS topic with cross-account access
Query: ```config from cloud.resource where cloud.type = 'aws' AND api.name = 'aws-sns-get-topic-attributes' AND json.rule = Policy.Statement[?any(Effect equals Allow and (Principal.AWS does not equal * and Principal does not equal * and Principal.AWS contains arn and Principal.AWS does not contain $.Owner))] exists```