CloudFormation Specifications
- Update CloudFormation specs to `165.0.0` (pull [3092](https://github.com/aws-cloudformation/cfn-lint/pull/3092))
Fixes
- RDS DB Cluster remove MasterUserPassword from exclusion with MasterUsername (pull [3106](https://github.com/aws-cloudformation/cfn-lint/pull/3106))
- fix an issue when searching for Ref in tojsonstring (pull [3107](https://github.com/aws-cloudformation/cfn-lint/pull/3107))