chore: update dependency webpack-cli to v6

Author: renovate[bot]

package-lock.json

@@ -48,7 +48,7 @@
     "puppeteer": "^23.0.0",
     "sirv-cli": "^3.0.0",
     "webpack": "^5.89.0",
-    "webpack-cli": "^5.1.4"
+    "webpack-cli": "^6.0.0"
   },
   "dependencies": {
     "bpmn-js": "^18.0.0",