Update dependency webpack-cli to v6 (#950)

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

Author: renovate[bot]

package-lock.json

@@ -25,7 +25,7 @@
         "ts-node": "^10.9.2",
         "typescript": "5.9.*",
         "webpack": "^5.93.0",
-        "webpack-cli": "^5.1.4",
+        "webpack-cli": "^6.0.0",
         "webpack-notifier": "^1.15.0"
     },
     "scripts": {