Posture check: AWS ElastiCache cluster not using supported engine version
Query: ```config from cloud.resource where api.name = 'aws-elasticache-cache-clusters' as X; config from cloud.resource where api.name = 'aws-cache-engine-versions' as Y; filter 'not( $.X.engine equals $.Y.engine and $.Y.cacheEngineVersionDescription contains $.X.engineVersion)'; show X;```