Replace database_cleaner with database_cleaner-active_record

Why

It's related to testing environment only, so we can bump to the latest version right away 🚀

• It loads only active-record related code
• It contains Rails 7.1 compatibility

Changlogs

• https://github.com/DatabaseCleaner/database_cleaner (CHANGELOG)
• https://github.com/DatabaseCleaner/database_cleaner-active_record (CHANGELOG)