build(deps-dev): bump @rocket/cli from 0.9.11 to 0.21.0

Bumps [@rocket/cli](https://github.com/modernweb-dev/rocket/tree/HEAD/packages/cli) from 0.9.11 to 0.21.0.
- [Release notes](https://github.com/modernweb-dev/rocket/releases)
- [Changelog](https://github.com/modernweb-dev/rocket/blob/main/packages/cli/CHANGELOG.md)
- [Commits](https://github.com/modernweb-dev/rocket/commits/@rocket/[email protected]/packages/cli)

---
updated-dependencies:
- dependency-name: "@rocket/cli"
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]