Bump webpack-cli from 4.10.0 to 5.0.0

Bumps [webpack-cli](https://github.com/webpack/webpack-cli) from 4.10.0 to 5.0.0.
- [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/webpack-cli@4.10.0...webpack-cli@5.0.0)

---
updated-dependencies:
- dependency-name: webpack-cli
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

package.json

@@ -55,7 +55,7 @@
     "styled-jsx": "5.1.0",
     "stylis": "3.5.4",
     "uuid": "9.0.0",
-    "webpack-cli": "4.10.0",
+    "webpack-cli": "5.0.0",
     "xterm": "4.19.0",
     "xterm-addon-fit": "^0.5.0",
     "xterm-addon-ligatures": "0.6.0-beta.19",