chore(deps): update dependency webpack-dev-server to v4 (#4543)

Co-authored-by: Renovate Bot <bot@renovateapp.com>

package.json

@@ -196,7 +196,7 @@
     "webpack": "^5.0.0",
     "webpack-bundle-analyzer": "^4.0.0",
     "webpack-cli": "^4.6.0",
-    "webpack-dev-server": "^3.1.14",
+    "webpack-dev-server": "^4.0.0",
     "webpack-merge": "^5.0.0",
     "webpackbar": "^5.0.0-3",
     "xhr-mock": "^2.5.1"