chore(deps-dev): Bump webpack-cli from 4.9.0 to 4.9.1

Bumps [webpack-cli](https://github.com/webpack/webpack-cli) from 4.9.0 to 4.9.1.
- [Release notes](https://github.com/webpack/webpack-cli/releases)
- [Changelog](https://github.com/webpack/webpack-cli/blob/master/CHANGELOG.md)
- [Commits](https://github.com/webpack/webpack-cli/compare/webpack-cli@4.9.0...webpack-cli@4.9.1)

---
updated-dependencies:
- dependency-name: webpack-cli
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]