build(deps): bump webpack-dev-middleware in /cosky-dashboard

Bumps [webpack-dev-middleware](https://github.com/webpack/webpack-dev-middleware) from 5.3.3 to 6.1.2.
- [Release notes](https://github.com/webpack/webpack-dev-middleware/releases)
- [Changelog](https://github.com/webpack/webpack-dev-middleware/blob/v6.1.2/CHANGELOG.md)
- [Commits](webpack/webpack-dev-middleware@v5.3.3...v6.1.2)

---
updated-dependencies:
- dependency-name: webpack-dev-middleware
  dependency-type: indirect
...

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