chore(deps): update dependency webpack-dev-server to v6

Author: renovate[bot]

packages/graphql-explorer-html/package.json

@@ -44,7 +44,7 @@
     "webpack": "^5.107.2",
     "webpack-atoms": "^17.1.0",
     "webpack-cli": "^7.0.3",
-    "webpack-dev-server": "^5.2.4"
+    "webpack-dev-server": "^6.0.0"
   },
   "dependencies": {
     "@apollo/client": "^4.2.0",