Bump nesbot/carbon from 3.8.0 to 3.8.4 in /service-front/app

Bumps [nesbot/carbon](https://github.com/briannesbitt/Carbon) from 3.8.0 to 3.8.4.
- [Release notes](https://github.com/briannesbitt/Carbon/releases)
- [Commits](briannesbitt/Carbon@3.8.0...3.8.4)

---
updated-dependencies:
- dependency-name: nesbot/carbon
  dependency-type: direct:production
...

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