Bump webpack-cli from 3.3.12 to 4.5.0

Bumps [webpack-cli](https://github.com/webpack/webpack-cli) from 3.3.12 to 4.5.0.
- [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@4.5.0)

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

package.json

@@ -64,7 +64,7 @@
     "url-loader": "^4.1.1",
     "webpack": "^4.43.0",
     "webpack-bundle-analyzer": "^4.4.0",
-    "webpack-cli": "^3.3.11",
+    "webpack-cli": "^4.5.0",
     "webpack-dev-middleware": "^3.7.2",
     "webpack-hot-middleware": "^2.25.0"
   }