Bump aws-cdk-lib from 2.20.0 to 2.215.0 in /cdk (#29)

Bumps [aws-cdk-lib](https://github.com/aws/aws-cdk) from 2.20.0 to 2.215.0.
- [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@v2.20.0...v2.215.0)

---
updated-dependencies:
- dependency-name: aws-cdk-lib
  dependency-version: 2.215.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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Author: dependabot[bot]