Update dependency webpack-dev-server to v5 [SECURITY]

Author: renovate[bot]

package.json

@@ -170,7 +170,7 @@
     "stylelint-scss": "^4.0.0",
     "webpack": "~4.46.0",
     "webpack-cli": "~3.3.12",
-    "webpack-dev-server": "~4.11.1",
+    "webpack-dev-server": "~5.2.0",
     "webpack-manifest-plugin": "~2.2.0",
     "webpack-merge": "~4.2.2",
     "webpack-stats-plugin": "^0.3.2"