hey guys, i'm not sure whether this is a pulumi issue or an AWS issue.. we have an elasticache cluster in our stack that was created with compatibility version:

6.x

eg:

const redis = new Cluster(ResourceName("redis"), {        
        engine: "redis",
        engineVersion: "6.x",
        nodeType: "cache.t3.micro",
        numCacheNodes: 1,
        parameterGroupName: "default.redis6.x",
        port: 6379,
        subnetGroupName: redisSubnetGroup.name,
        securityGroupIds: [redisSecurityGroup.id]
...

i'm trying to upgrade it to version 7 but not having any luck.. i change to:

...
        engineVersion: "7.x",
        parameterGroupName: "default.redis7",
...

and i get the following error:

Error updating ElastiCache cluster (kp-au-test2-redis-9221ace), error: InvalidParameterCombination: Cannot find version 7.x for redis

i also tried specifying

engineVersion: "7.0"

,

engineVersion: "7"

and

engineVersion: "7.0.7"

and each time, i get the error:

engine_version: Redis versions must match <major>.x when using version 6 or higher, or <major>.<minor>.<bug-fix>

would anybody have any clues what we might be doing wrong?