Bump webpack-dev-server from 4.9.3 to 5.2.1

Bumps [webpack-dev-server](https://github.com/webpack/webpack-dev-server) from 4.9.3 to 5.2.1.
- [Release notes](https://github.com/webpack/webpack-dev-server/releases)
- [Changelog](https://github.com/webpack/webpack-dev-server/blob/master/CHANGELOG.md)
- [Commits](https://github.com/webpack/webpack-dev-server/compare/v4.9.3...v5.2.1)

---
updated-dependencies:
- dependency-name: webpack-dev-server
  dependency-version: 5.2.1
  dependency-type: direct:development
...

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

scm-ui/ui-webapp/package.json

@@ -72,7 +72,7 @@
     "style-loader": "^3.3.1",
     "webpack": "^5.72.0",
     "webpack-cli": "^4.9.1",
-    "webpack-dev-server": "^4.4.0",
+    "webpack-dev-server": "^5.2.1",
     "postcss-loader": "^6.2.1"
   },
   "babel": {