Bump http-proxy-middleware and webpack-dev-server

Bumps [http-proxy-middleware](https://github.com/chimurai/http-proxy-middleware) to 4.2.0 and updates ancestor dependency [webpack-dev-server](https://github.com/webpack/webpack-dev-server). These dependencies need to be updated together.


Updates `http-proxy-middleware` from 2.0.9 to 4.2.0
- [Release notes](https://github.com/chimurai/http-proxy-middleware/releases)
- [Changelog](https://github.com/chimurai/http-proxy-middleware/blob/master/CHANGELOG.md)
- [Commits](chimurai/http-proxy-middleware@v2.0.9...v4.2.0)

Updates `webpack-dev-server` from 5.2.6 to 6.0.0
- [Release notes](https://github.com/webpack/webpack-dev-server/releases)
- [Changelog](https://github.com/webpack/webpack-dev-server/blob/main/CHANGELOG.md)
- [Commits](webpack/webpack-dev-server@v5.2.6...v6.0.0)

---
updated-dependencies:
- dependency-name: http-proxy-middleware
  dependency-version: 4.2.0
  dependency-type: indirect
- dependency-name: webpack-dev-server
  dependency-version: 6.0.0
  dependency-type: direct:development
...

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

Author: dependabot[bot]