Bump loader-utils and react-scripts in /client

Bumps [loader-utils](https://github.com/webpack/loader-utils) to 2.0.4 and updates ancestor dependency [react-scripts](https://github.com/facebook/create-react-app/tree/HEAD/packages/react-scripts). These dependencies need to be updated together.


Updates `loader-utils` from 1.2.3 to 2.0.4
- [Release notes](https://github.com/webpack/loader-utils/releases)
- [Changelog](https://github.com/webpack/loader-utils/blob/v2.0.4/CHANGELOG.md)
- [Commits](https://github.com/webpack/loader-utils/compare/v1.2.3...v2.0.4)

Updates `react-scripts` from 2.1.8 to 5.0.1
- [Release notes](https://github.com/facebook/create-react-app/releases)
- [Changelog](https://github.com/facebook/create-react-app/blob/main/CHANGELOG-2.x.md)
- [Commits](https://github.com/facebook/create-react-app/commits/react-scripts@5.0.1/packages/react-scripts)

---
updated-dependencies:
- dependency-name: loader-utils
  dependency-type: indirect
- dependency-name: react-scripts
  dependency-type: direct:production
...

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

client/package.json

@@ -13,7 +13,7 @@
     "react-ga": "^2.5.7",
     "react-redux": "^6.0.1",
     "react-router-dom": "^5.0.0",
-    "react-scripts": "2.1.8",
+    "react-scripts": "5.0.1",
     "react-toastify": "^5.0.1",
     "redux": "^4.0.1",
     "redux-form": "^8.1.0",