Features
- Define an initial Docker file (pull [1361](https://github.com/aws-cloudformation/cfn-python-lint/pull/1361))
CloudFormation Specifications
- Update CloudFormation specs to 11.2.0 (pull [1390](https://github.com/aws-cloudformation/cfn-python-lint/pull/1390))
- Add allowed values for `AWS::RDS::DBInstance` `Engine` (pull [1398](https://github.com/aws-cloudformation/cfn-python-lint/pull/1398))
Fixes
- Update rule [E3039](https://github.com/aws-cloudformation/cfn-python-lint/blob/main/docs/rules.md#E3039) to properly filter down attributes before checking values (pull [1392](https://github.com/aws-cloudformation/cfn-python-lint/pull/1392))
- Update rule [E1019](https://github.com/aws-cloudformation/cfn-python-lint/blob/main/docs/rules.md#E1019) to not join GetAtt if they aren't strings (pull [1389](https://github.com/aws-cloudformation/cfn-python-lint/pull/1389))
- Consolidate region and spec information into singular item (pull [1357](https://github.com/aws-cloudformation/cfn-python-lint/pull/1357))