[Security] Bump ffi from 1.9.8 to 1.9.25
[Security] Bump ffi from 1.9.8 to 1.9.25

Bumps [ffi](https://github.com/ffi/ffi) from 1.9.8 to 1.9.25. **This update includes security fixes.**
- [Release notes](https://github.com/ffi/ffi/releases)
- [Changelog](https://github.com/ffi/ffi/blob/master/CHANGELOG.md)
- [Commits](https://github.com/ffi/ffi/compare/1.9.8...1.9.25)

Signed-off-by: dependabot[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@dependabot.com>
pusewicz/ultimate-minitest-rails