kggau

fix(NODE-6407): use conversationId returned by the server instead of hardcoded integer in SASL implementation for MONGODB-AWS.

2

### Description `MONGODB-AWS` authentication mechanism should follow SASL [spec](https://github.com/mongodb/specifications/blob/master/source/auth/auth.md#sasl-mechanisms). Current implementation ignores the `conversationId` sent by the server and uses a hardcoded integer for all `saslContinue` messages across all conversations....