chore(deps-dev): bump jsii-rosetta from 5.6.19 to 5.6.20

Bumps [jsii-rosetta](https://github.com/aws/jsii-rosetta) from 5.6.19 to 5.6.20.
- [Release notes](https://github.com/aws/jsii-rosetta/releases)
- [Changelog](https://github.com/aws/jsii-rosetta/blob/main/releases.json)
- [Commits](aws/jsii-rosetta@v5.6.19...v5.6.20)

---
updated-dependencies:
- dependency-name: jsii-rosetta
  dependency-version: 5.6.20
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]