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

Author: renovate[bot]

package.json

@@ -43,7 +43,7 @@
     "tap": "12.7.0",
     "web-audio-test-api": "0.5.2",
     "webpack": "4.47.0",
-    "webpack-cli": "3.3.12"
+    "webpack-cli": "6.0.0"
   },
   "config": {
     "commitizen": {