Bump active_hash from 3.0.0 to 3.1.0
Bump active_hash from 3.0.0 to 3.1.0

Bumps [active_hash](https://github.com/zilkey/active_hash) from 3.0.0 to 3.1.0.
- [Release notes](https://github.com/zilkey/active_hash/releases)
- [Changelog](https://github.com/zilkey/active_hash/blob/master/CHANGELOG)
- [Commits](https://github.com/zilkey/active_hash/commits)

Signed-off-by: dependabot-preview[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@dependabot.com>
alphagov/contacts-admin,alphagov/contacts-admin,alphagov/contacts-admin