Bump webpack-cli from 4.10.0 to 5.1.4 in /Auth/LearningHub.Nhs.Auth

Bumps [webpack-cli](https://github.com/webpack/webpack-cli) from 4.10.0 to 5.1.4.
- [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]@5.1.4)

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

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

Author: dependabot[bot]

Auth/LearningHub.Nhs.Auth/package.json

@@ -42,7 +42,7 @@
     "ts-node": "^10.2.0",
     "typescript": "^4.2.4",
     "webpack": "^5.79.0",
-    "webpack-cli": "^4.10.0",
+    "webpack-cli": "^5.1.4",
     "webpack-dev-server": "^4.15.1"
   }
 }