Bump apps/discourse from `6811902` to `8a3a6fa`
Bump apps/discourse from `6811902` to `8a3a6fa`

Bumps [apps/discourse](https://github.com/discourse/discourse) from `6811902` to `8a3a6fa`.
- [Release notes](https://github.com/discourse/discourse/releases)
- [Commits](https://github.com/discourse/discourse/compare/6811902a70b807ba67126cd8fd9cd18d558b6e86...8a3a6face52f1aed771f374eb36670a31b41b1bb)

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