Bump livewire/livewire from 4.2.4 to 4.3.4 in /backend (#750)

Bumps [livewire/livewire](https://github.com/livewire/livewire) from 4.2.4 to 4.3.4.
- [Release notes](https://github.com/livewire/livewire/releases)
- [Commits](livewire/livewire@v4.2.4...v4.3.4)

---
updated-dependencies:
- dependency-name: livewire/livewire
  dependency-version: 4.3.4
  dependency-type: direct:production
...

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