Bump json5 and laravel-mix

Bumps [json5](https://github.com/json5/json5) to 2.2.3 and updates ancestor dependency [laravel-mix](https://github.com/JeffreyWay/laravel-mix). These dependencies need to be updated together.


Updates `json5` from 0.5.1 to 2.2.3
- [Release notes](https://github.com/json5/json5/releases)
- [Changelog](https://github.com/json5/json5/blob/main/CHANGELOG.md)
- [Commits](json5/json5@v0.5.1...v2.2.3)

Updates `laravel-mix` from 2.1.14 to 6.0.49
- [Release notes](https://github.com/JeffreyWay/laravel-mix/releases)
- [Changelog](https://github.com/laravel-mix/laravel-mix/blob/master/CHANGELOG.md)
- [Upgrade guide](https://github.com/laravel-mix/laravel-mix/blob/master/UPGRADE.md)
- [Commits](https://github.com/JeffreyWay/laravel-mix/commits)

---
updated-dependencies:
- dependency-name: json5
  dependency-type: indirect
- dependency-name: laravel-mix
  dependency-type: direct:development
...

Signed-off-by: dependabot[bot] <support@github.com>