chore(deps-dev): bump webpack-dev-server in /frontend

Bumps [webpack-dev-server](https://github.com/webpack/webpack-dev-server) from 4.9.3 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/v4.9.3...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>

frontend/apps/remark42/package.json

@@ -126,6 +126,6 @@
     "webpack": "^5.104.1",
     "webpack-bundle-analyzer": "^4.5.0",
     "webpack-cli": "^4.10.0",
-    "webpack-dev-server": "^4.9.3"
+    "webpack-dev-server": "^5.2.4"
   }
 }