Bump apps/on_ruby from `3f8c48f` to `2378171`
Bump apps/on_ruby from `3f8c48f` to `2378171`

Bumps [apps/on_ruby](https://github.com/phoet/on_ruby) from `3f8c48f` to `2378171`.
- [Release notes](https://github.com/phoet/on_ruby/releases)
- [Commits](https://github.com/phoet/on_ruby/compare/3f8c48f9e86072de8da50d9b25d20b66518995b1...237817193ce32bf86a2eda8930edabd1a8436da6)

Signed-off-by: dependabot-preview[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@dependabot.com>
eliotsykes/real-world-rails