Cfn-lint

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))

Features
- support for AWS::LanguageExtensions transform features including DeletionPolicy, UpdateReplacePolicy, Fn::Length and Fn::ToJsonString [docs](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/intrinsic-function-reference.html) (pull #[2339](https://github.com/aws-cloudformation/cfn-lint/pull/2339))
- Add rule [E1030](https://github.com/aws-cloudformation/cfn-python-lint/blob/main/docs/rules.md#E1030) to validate Fn::Length is configured correctly (pull [2339](https://github.com/aws-cloudformation/cfn-lint/pull/2339))
- Add rule [E1031](https://github.com/aws-cloudformation/cfn-python-lint/blob/main/docs/rules.md#E1030) to validate Fn::Length is configured correctly (pull [2339](https://github.com/aws-cloudformation/cfn-lint/pull/2339))

Features
- Create new API to allow for easier integration of using cfn-lint as a library [docs](https://github.com/aws-cloudformation/cfn-lint/blob/main/docs/getting_started/integration.md) (pull #[2285](https://github.com/aws-cloudformation/cfn-lint/pull/2285))
CloudFormation Specifications
- Update CloudFormation specs to `85.0.0` (pull [2324](https://github.com/aws-cloudformation/cfn-lint/pull/2324))
- Update Lambda deprecation dates (pull [2327](https://github.com/aws-cloudformation/cfn-lint/pull/2327))
Fixes
- Fix an issue with `RulesCollection` in which configurations would carry over between templates (pull [2331](https://github.com/aws-cloudformation/cfn-lint/pull/2331))
- Add used rules into `RulesCollection` so we can print all the used rules in JUnit and Pretty formatting (pull [2330](https://github.com/aws-cloudformation/cfn-lint/pull/2330))
- Update error message on [E3002](https://github.com/aws-cloudformation/cfn-python-lint/blob/main/docs/rules.md#E3002) (pull [2059](https://github.com/aws-cloudformation/cfn-lint/pull/2059))
- Update error description on [E1020](https://github.com/aws-cloudformation/cfn-python-lint/blob/main/docs/rules.md#E1020) (pull [2329](https://github.com/aws-cloudformation/cfn-lint/pull/2329))