Bump webpack-dev-server from 5.2.1 to 5.2.4 in /website (#5335)

Bumps [webpack-dev-server](https://github.com/webpack/webpack-dev-server) from 5.2.1 to 5.2.4.
- [Release notes](https://github.com/webpack/webpack-dev-server/releases)
- [Changelog](https://github.com/webpack/webpack-dev-server/blob/main/CHANGELOG.md)
- [Commits](https://github.com/webpack/webpack-dev-server/compare/v5.2.1...v5.2.4)

---
updated-dependencies:
- dependency-name: webpack-dev-server
  dependency-version: 5.2.4
  dependency-type: direct:development
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>