chore(deps): bump the aws-cdk group with 2 updates

Bumps the aws-cdk group with 2 updates: [@aws-cdk/toolkit-lib](https://github.com/aws/aws-cdk-cli/tree/HEAD/packages/@aws-cdk/toolkit-lib) and [aws-cdk-lib](https://github.com/aws/aws-cdk/tree/HEAD/packages/aws-cdk-lib).


Updates `@aws-cdk/toolkit-lib` from 1.19.3 to 1.21.0
- [Release notes](https://github.com/aws/aws-cdk-cli/releases)
- [Commits](https://github.com/aws/aws-cdk-cli/commits/@aws-cdk/toolkit-lib@v1.21.0/packages/@aws-cdk/toolkit-lib)

Updates `aws-cdk-lib` from 2.244.0 to 2.246.0
- [Release notes](https://github.com/aws/aws-cdk/releases)
- [Changelog](https://github.com/aws/aws-cdk/blob/main/CHANGELOG.v2.alpha.md)
- [Commits](https://github.com/aws/aws-cdk/commits/v2.246.0/packages/aws-cdk-lib)

---
updated-dependencies:
- dependency-name: "@aws-cdk/toolkit-lib"
  dependency-version: 1.21.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: aws-cdk
- dependency-name: aws-cdk-lib
  dependency-version: 2.246.0
  dependency-type: direct:development
  update-type: version-update:semver-minor
  dependency-group: aws-cdk
...

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Author: dependabot[bot]