CloudFormation Specifications
- Update CloudFormation specs to `151.0.0` (pull [2969](https://github.com/aws-cloudformation/cfn-lint/pull/2969))
Fixes
- Fix LanguageTransformer to better handle `Fn::GetAtt` dot notation in `Fn::Sub` (pull [2974](https://github.com/aws-cloudformation/cfn-lint/pull/2974))
- Update rule [E2530](https://github.com/aws-cloudformation/cfn-python-lint/blob/main/docs/rules.md#E2530) and [I2530](https://github.com/aws-cloudformation/cfn-python-lint/blob/main/docs/rules.md#I2530) to support regionality of the `SnapStart` feature (pull [2973](https://github.com/aws-cloudformation/cfn-lint/pull/2973))