StellarCluster.BucketAsync creates new buckets, scopes, colls on every call

 public ValueTask<IBucket> BucketAsync(string name) => new(new StellarBucket(name, this, _queryClient));

The cluster and query are shared across all instances, but that would mean that bucket.Dispose() would close the channel for all other buckets as well, for example. Bucket.Dispose is not implemented in Stellar, however, it could me lots of unecessary heap allocations that would be GC'd in the first gen.