build(deps-dev): bump webpack-cli from 4.5.0 to 4.7.0 in /addon

Bumps [webpack-cli](https://github.com/webpack/webpack-cli) from 4.5.0 to 4.7.0.
- [Release notes](https://github.com/webpack/webpack-cli/releases)
- [Changelog](https://github.com/webpack/webpack-cli/blob/master/CHANGELOG.md)
- [Commits](https://github.com/webpack/webpack-cli/compare/[email protected]@4.7.0)

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

addon/package-lock.json

@@ -13,7 +13,7 @@
     "eslint-plugin-no-unsanitized": "^3.1.5",
     "web-ext": "^6.0.0",
     "webpack": "^5.36.2",
-    "webpack-cli": "^4.5.0"
+    "webpack-cli": "^4.7.0"
   },
   "scripts": {
     "lint": "eslint src/*.js",