chore(deps): Bump the cdk-deps group in /cdk with 2 updates

Bumps the cdk-deps group in /cdk with 2 updates: [aws-cdk-lib](https://github.com/aws/aws-cdk) and [black](https://github.com/psf/black).


Updates `aws-cdk-lib` from 2.241.0 to 2.243.0
- [Release notes](https://github.com/aws/aws-cdk/releases)
- [Changelog](https://github.com/aws/aws-cdk/blob/main/CHANGELOG.v2.alpha.md)
- [Commits](aws/aws-cdk@v2.241.0...v2.243.0)

Updates `black` from 26.3.0 to 26.3.1
- [Release notes](https://github.com/psf/black/releases)
- [Changelog](https://github.com/psf/black/blob/main/CHANGES.md)
- [Commits](psf/black@26.3.0...26.3.1)

---
updated-dependencies:
- dependency-name: aws-cdk-lib
  dependency-version: 2.243.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: cdk-deps
- dependency-name: black
  dependency-version: 26.3.1
  dependency-type: direct:development
  update-type: version-update:semver-patch
  dependency-group: cdk-deps
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]