fix(deps): bump tsx from 4.20.3 to 4.21.0 in /frontend (#326)

Bumps [tsx](https://github.com/privatenumber/tsx) from 4.20.3 to 4.21.0.
- [Release notes](https://github.com/privatenumber/tsx/releases)
- [Changelog](https://github.com/privatenumber/tsx/blob/master/release.config.cjs)
- [Commits](privatenumber/tsx@v4.20.3...v4.21.0)

---
updated-dependencies:
- dependency-name: tsx
  dependency-version: 4.21.0
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

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Author: dependabot[bot]