Update cafy requirement from 12.0.0 to 12.1.0 (#4099)

Updates the requirements on [cafy](https://github.com/syuilo/cafy) to permit the latest version.
- [Release notes](https://github.com/syuilo/cafy/releases)
- [Changelog](https://github.com/syuilo/cafy/blob/master/CHANGELOG.md)
- [Commits](https://github.com/syuilo/cafy/commits

)

Signed-off-by: dependabot[bot] <support@dependabot.com>