chore(deps-dev): bump webpack-dev-server in /src/packages/excalidraw (#5158)

Bumps [webpack-dev-server](https://github.com/webpack/webpack-dev-server) from 4.7.4 to 4.9.0.
- [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/v4.7.4...v4.9.0)

---
updated-dependencies:
- dependency-name: webpack-dev-server
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

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

src/packages/excalidraw/package.json

@@ -66,7 +66,7 @@
     "webpack": "5.72.0",
     "webpack-bundle-analyzer": "4.5.0",
     "webpack-cli": "4.9.2",
-    "webpack-dev-server": "4.7.4",
+    "webpack-dev-server": "4.9.0",
     "webpack-merge": "5.8.0"
   },
   "bugs": "https://github.com/excalidraw/excalidraw/issues",