Bump laravel/horizon from 5.31.2 to 5.32.0 in the php-dependencies group

Bumps the php-dependencies group with 1 update: [laravel/horizon](https://github.com/laravel/horizon).


Updates `laravel/horizon` from 5.31.2 to 5.32.0
- [Release notes](https://github.com/laravel/horizon/releases)
- [Changelog](https://github.com/laravel/horizon/blob/5.x/CHANGELOG.md)
- [Commits](laravel/horizon@v5.31.2...v5.32.0)

---
updated-dependencies:
- dependency-name: laravel/horizon
  dependency-version: 5.32.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: php-dependencies
...

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Author: dependabot[bot]