Bump shell-quote and react-scripts in /frontend

Bumps [shell-quote](https://github.com/ljharb/shell-quote) to 1.8.3 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 `shell-quote` from 1.7.2 to 1.8.3
- [Changelog](https://github.com/ljharb/shell-quote/blob/main/CHANGELOG.md)
- [Commits](ljharb/shell-quote@v1.7.2...v1.8.3)

Updates `react-scripts` from 3.4.3 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-3.x.md)
- [Commits](https://github.com/facebook/create-react-app/commits/react-scripts@5.0.1/packages/react-scripts)

---
updated-dependencies:
- dependency-name: shell-quote
  dependency-version: 1.8.3
  dependency-type: indirect
- dependency-name: react-scripts
  dependency-version: 5.0.1
  dependency-type: direct:production
...

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Author: dependabot[bot]