Bump better_errors from 2.1.1 to 2.4.0
Bump better_errors from 2.1.1 to 2.4.0

Bumps [better_errors](https://github.com/charliesome/better_errors) from 2.1.1 to 2.4.0.
- [Release notes](https://github.com/charliesome/better_errors/releases)
- [Changelog](https://github.com/charliesome/better_errors/blob/master/CHANGELOG.md)
- [Commits](https://github.com/charliesome/better_errors/compare/v2.1.1...v2.4.0)
FundingCircle/shipment_tracker,FundingCircle/shipment_tracker,FundingCircle/shipment_tracker,FundingCircle/shipment_tracker