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

Author: renovate[bot]

package.json

@@ -62,7 +62,7 @@
     "vue-loader": "^16.2.0",
     "webpack": "^5.49.0",
     "webpack-cli": "^4.7.2",
-    "webpack-dev-server": "^3.11.2",
+    "webpack-dev-server": "^4.0.0",
     "yorkie": "^2.0.0"
   },
   "engines": {