Features
- EOL of Python 2.7, 3.4, and 3.5 support (pull [2195](https://github.com/aws-cloudformation/cfn-lint/pull/2195))
CloudFormation Specifications
- Update CloudFormation specs to `53.0.0` (pull [2196](https://github.com/aws-cloudformation/cfn-lint/pull/2196))
- Fix an issue with rule [E2001](https://github.com/aws-cloudformation/cfn-python-lint/blob/main/docs/rules.md#E2001) to allow string parameter constraints for all AWS specific types (pull [2193](https://github.com/aws-cloudformation/cfn-lint/pull/2193))