Update dependency webpack-cli to v6

Author: renovate[bot]

package-lock.json

@@ -56,6 +56,6 @@
     "sharp": "^0.33.4",
     "style-loader": "3.3.4",
     "webpack": "5.94.0",
-    "webpack-cli": "5.1.4"
+    "webpack-cli": "6.0.1"
   }
 }