Bump webpack-cli from 3.3.12 to 4.4.0

Bumps [webpack-cli](https://github.com/webpack/webpack-cli) from 3.3.12 to 4.4.0.
- [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/v3.3.12...webpack-cli@4.4.0)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

package.json

@@ -67,7 +67,7 @@
         "jest": "^25.1.0",
         "rimraf": "^3.0.2",
         "webpack": "^4.42.0",
-        "webpack-cli": "^3.3.11",
+        "webpack-cli": "^4.4.0",
         "webpack-node-externals": "^1.7.2"
     }
 }