chore(deps-dev): Bump @wordpress/env from 8.8.0 to 8.9.0

Bumps [@wordpress/env](https://github.com/WordPress/gutenberg/tree/HEAD/packages/env) from 8.8.0 to 8.9.0.
- [Release notes](https://github.com/WordPress/gutenberg/releases)
- [Changelog](https://github.com/WordPress/gutenberg/blob/trunk/packages/env/CHANGELOG.md)
- [Commits](https://github.com/WordPress/gutenberg/commits/@wordpress/[email protected]/packages/env)

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

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