chore: bump webpack-cli from 3.3.12 to 4.6.0 (#557)

Bumps [webpack-cli](https://github.com/webpack/webpack-cli) from 3.3.12 to 4.6.0.
- [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])

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

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

modules/example-browser/package.json

@@ -40,7 +40,7 @@
     "tslib": "^2.2.0",
     "typescript": "^4.0.2",
     "webpack": "^4.42.1",
-    "webpack-cli": "4.3.1"
+    "webpack-cli": "4.6.0"
   },
   "main": "./build/main/index.js",
   "module": "./build/module/index.js",