Bump the php-dependencies group with 4 updates

Bumps the php-dependencies group with 4 updates: [guzzlehttp/guzzle](https://github.com/guzzle/guzzle), [laravel/horizon](https://github.com/laravel/horizon), [league/commonmark](https://github.com/thephpleague/commonmark) and [sentry/sentry-laravel](https://github.com/getsentry/sentry-laravel).


Updates `guzzlehttp/guzzle` from 7.8.1 to 7.9.1
- [Release notes](https://github.com/guzzle/guzzle/releases)
- [Changelog](https://github.com/guzzle/guzzle/blob/7.9/CHANGELOG.md)
- [Commits](guzzle/guzzle@7.8.1...7.9.1)

Updates `laravel/horizon` from 5.25.0 to 5.26.0
- [Release notes](https://github.com/laravel/horizon/releases)
- [Changelog](https://github.com/laravel/horizon/blob/5.x/CHANGELOG.md)
- [Commits](laravel/horizon@v5.25.0...v5.26.0)

Updates `league/commonmark` from 2.4.2 to 2.5.0
- [Release notes](https://github.com/thephpleague/commonmark/releases)
- [Changelog](https://github.com/thephpleague/commonmark/blob/2.5/CHANGELOG.md)
- [Commits](thephpleague/commonmark@2.4.2...2.5.0)

Updates `sentry/sentry-laravel` from 4.7.0 to 4.7.1
- [Release notes](https://github.com/getsentry/sentry-laravel/releases)
- [Changelog](https://github.com/getsentry/sentry-laravel/blob/master/CHANGELOG.md)
- [Commits](getsentry/sentry-laravel@4.7.0...4.7.1)

---
updated-dependencies:
- dependency-name: guzzlehttp/guzzle
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: php-dependencies
- dependency-name: laravel/horizon
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: php-dependencies
- dependency-name: league/commonmark
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: php-dependencies
- dependency-name: sentry/sentry-laravel
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: php-dependencies
...

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

Author: dependabot[bot]