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

@@ -31,7 +31,7 @@
     "time-ago": "^0.2.1",
     "typescript": "^3.9.7",
     "webpack": "^4.28.4",
-    "webpack-cli": "^3.2.1",
+    "webpack-cli": "^4.5.0",
     "ws": "^7.3.1"
   },
   "browserslist": [