chore(deps-dev): bump cdk-nag from 2.28.195 to 2.29.6

Bumps [cdk-nag](https://github.com/cdklabs/cdk-nag) from 2.28.195 to 2.29.6.
- [Release notes](https://github.com/cdklabs/cdk-nag/releases)
- [Commits](cdklabs/cdk-nag@v2.28.195...v2.29.6)

---
updated-dependencies:
- dependency-name: cdk-nag
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>