Bump webpack-dev-middleware and webpack-dev-server

Bumps [webpack-dev-middleware](https://github.com/webpack/webpack-dev-middleware) to 7.2.1 and updates ancestor dependency [webpack-dev-server](https://github.com/webpack/webpack-dev-server). These dependencies need to be updated together.


Updates `webpack-dev-middleware` from 3.7.3 to 7.2.1
- [Release notes](https://github.com/webpack/webpack-dev-middleware/releases)
- [Changelog](https://github.com/webpack/webpack-dev-middleware/blob/master/CHANGELOG.md)
- [Commits](webpack/webpack-dev-middleware@v3.7.3...v7.2.1)

Updates `webpack-dev-server` from 3.11.3 to 5.0.4
- [Release notes](https://github.com/webpack/webpack-dev-server/releases)
- [Changelog](https://github.com/webpack/webpack-dev-server/blob/master/CHANGELOG.md)
- [Commits](webpack/webpack-dev-server@v3.11.3...v5.0.4)

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

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