Cfn-lint

CloudFormation Specifications
- Update CloudFormation specs to `89.0.0` (pull [2366](https://github.com/aws-cloudformation/cfn-lint/pull/2366))
- Add support for `custom` RDS `Engine` types on resource type `AWS::RDS::DBInstance` (pull [2370](https://github.com/aws-cloudformation/cfn-lint/pull/2370))
- Remove extra spacing in specs reducing overall size (pull [2371](https://github.com/aws-cloudformation/cfn-lint/pull/2371))
- Update `AllowedValues` for `RetentionInDays` on resource type `AWS::Logs::LogGroup` (pull [2372](https://github.com/aws-cloudformation/cfn-lint/pull/2372))

Features
- Add `--force` option on `--update-specs` so cache isn't used (pull [2334](https://github.com/aws-cloudformation/cfn-lint/pull/2334))
- Add support for Python 3.10 (pull [2365](https://github.com/aws-cloudformation/cfn-lint/pull/2365))
CloudFormation Specifications
- Update CloudFormation specs to `88.0.0` (pull [2361](https://github.com/aws-cloudformation/cfn-lint/pull/2361))
Fixes
- Add in `mypy` testing and do a bunch of cleanup based on the results (pull [2328](https://github.com/aws-cloudformation/cfn-lint/pull/2328))
- Update rule [I1022](https://github.com/aws-cloudformation/cfn-python-lint/blob/main/docs/rules.md#I1022) to not suggest `Fn::Sub` on complext `Fn::Join`s (pull [2364](https://github.com/aws-cloudformation/cfn-lint/pull/2364))

Fixes
- Make `me-central-1` `ExtendedSpecs` a module (pull [2359](https://github.com/aws-cloudformation/cfn-lint/pull/2359))

Features
- Update `jsonschema` to be able to use version 3.0 and 4.0 (pull [2336](https://github.com/aws-cloudformation/cfn-lint/pull/2336))
- Remove support for python 3.6 and add python 3.9 (pull [2347](https://github.com/aws-cloudformation/cfn-lint/pull/2347))
CloudFormation Specifications
- Update CloudFormation specs to `87.0.0` (pull [2353](https://github.com/aws-cloudformation/cfn-lint/pull/2353))
- Add support for region `me-central-1` (pull [2351](https://github.com/aws-cloudformation/cfn-lint/pull/2351))
Fixes
- Disable the SAM validation checks when transforming a template (pull [2350](https://github.com/aws-cloudformation/cfn-lint/pull/2350))

CloudFormation Specifications
- Patch in attributes for `AWS::RDS::DBCluster` (pull [2344](https://github.com/aws-cloudformation/cfn-lint/pull/2344))

CloudFormation Specifications
- Update CloudFormation specs to `86.0.0` (pull [2335](https://github.com/aws-cloudformation/cfn-lint/pull/2335))