Bump cross-env from 3.2.4 to 5.2.0
Bumps [cross-env](https://github.com/kentcdodds/cross-env) from 3.2.4 to 5.2.0.
- [Release notes](https://github.com/kentcdodds/cross-env/releases)
- [Changelog](https://github.com/kentcdodds/cross-env/blob/master/CHANGELOG.md)
- [Commits](https://github.com/kentcdodds/cross-env/compare/v3.2.4...v5.2.0)