Bump webpack-dev-server from 3.11.2 to 4.0.0

Bumps [webpack-dev-server](https://github.com/webpack/webpack-dev-server) from 3.11.2 to 4.0.0.
- [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/v3.11.2...v4.0.0)

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

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

package.json

@@ -301,7 +301,7 @@
     "vue-template-compiler": "^2.6.14",
     "webpack": "^5.46.0",
     "webpack-cli": "^4.7.2",
-    "webpack-dev-server": "^3.11.2",
+    "webpack-dev-server": "^4.0.0",
     "webpack-hot-middleware": "^2.25.0"
   }
 }