Bump apps/pupilfirst from `3405d5c` to `9478e19`
Bump apps/pupilfirst from `3405d5c` to `9478e19`

Bumps [apps/pupilfirst](https://github.com/pupilfirst/pupilfirst) from `3405d5c` to `9478e19`.
- [Release notes](https://github.com/pupilfirst/pupilfirst/releases)
- [Commits](https://github.com/pupilfirst/pupilfirst/compare/3405d5c49b831957253e03bb212831740edeb3a2...9478e197bf9dbd7bf62e775e27115dc255d4a895)

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