Bump hashdiff from 0.3.9 to 0.4.0
Bump hashdiff from 0.3.9 to 0.4.0

Bumps [hashdiff](https://github.com/liufengyun/hashdiff) from 0.3.9 to 0.4.0.
- [Release notes](https://github.com/liufengyun/hashdiff/releases)
- [Changelog](https://github.com/liufengyun/hashdiff/blob/master/changelog.md)
- [Commits](https://github.com/liufengyun/hashdiff/compare/v0.3.9...v0.4.0)
ministryofjustice/advocate-defence-payments,ministryofjustice/advocate-defence-payments,ministryofjustice/advocate-defence-payments,ministryofjustice/advocate-defence-payments