chore(deps-dev): bump jsii-docgen from 7.0.202 to 7.2.9

Bumps [jsii-docgen](https://github.com/cdklabs/jsii-docgen) from 7.0.202 to 7.2.9.
- [Release notes](https://github.com/cdklabs/jsii-docgen/releases)
- [Changelog](https://github.com/cdklabs/jsii-docgen/blob/main/CHANGELOG.md)
- [Commits](cdklabs/jsii-docgen@v7.0.202...v7.2.9)

---
updated-dependencies:
- dependency-name: jsii-docgen
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

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