Bump apps/discourse from `3895084` to `a4fb28c`
Bump apps/discourse from `3895084` to `a4fb28c`

Bumps [apps/discourse](https://github.com/discourse/discourse) from `3895084` to `a4fb28c`.
- [Release notes](https://github.com/discourse/discourse/releases)
- [Commits](https://github.com/discourse/discourse/compare/38950840e072886e5d79a520268131b5249ce12d...a4fb28ccd89c731bb6029dd649284b6a4f51afae)

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