chore(deps): update devdependency webpack-cli to v6

Author: renovate[bot]

package.json

@@ -67,7 +67,7 @@
     "unbuild": "^2.0.0",
     "vitest": "^2.1.9",
     "webpack": "^5.98.0",
-    "webpack-cli": "^5.1.4",
+    "webpack-cli": "^6.0.1",
     "wrap-ansi": "^9.0.0"
   },
   "peerDependencies": {