pkg: Update webpack-cli to v6 (#3318)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

examples/benchmark/package.json

@@ -32,6 +32,6 @@
     "@types/benchmark": "2.1.5",
     "@types/react": "19.0.2",
     "webpack": "^5.76.2",
-    "webpack-cli": "^5.1.4"
+    "webpack-cli": "^6.0.0"
   }
 }

examples/github-app/package-lock.json

@@ -44,7 +44,7 @@
     "react-refresh": "0.16.0",
     "serve": "14.2.4",
     "webpack": "5.97.1",
-    "webpack-cli": "5.1.4",
+    "webpack-cli": "6.0.0",
     "webpack-dev-server": "5.2.0"
   },
   "dependencies": {