Bump database_cleaner from 1.8.3 to 1.8.4
Bump database_cleaner from 1.8.3 to 1.8.4

Bumps [database_cleaner](https://github.com/DatabaseCleaner/database_cleaner) from 1.8.3 to 1.8.4.
- [Release notes](https://github.com/DatabaseCleaner/database_cleaner/releases)
- [Changelog](https://github.com/DatabaseCleaner/database_cleaner/blob/master/History.rdoc)
- [Commits](https://github.com/DatabaseCleaner/database_cleaner/compare/v1.8.3...v1.8.4)

Signed-off-by: dependabot-preview[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@dependabot.com>
Growstuff/growstuff,Growstuff/growstuff,Br3nda/growstuff,Growstuff/growstuff,cesy/growstuff,Growstuff/growstuff,cesy/growstuff,cesy/growstuff,Br3nda/growstuff,Br3nda/growstuff,cesy/growstuff,Br3nda/growstuff