Bump apps/zammad from `9775af5` to `d57ac53`
Bump apps/zammad from `9775af5` to `d57ac53`

Bumps [apps/zammad](https://github.com/zammad/zammad) from `9775af5` to `d57ac53`.
- [Release notes](https://github.com/zammad/zammad/releases)
- [Commits](https://github.com/zammad/zammad/compare/9775af5e980539a01d5e1b37b2352c6cf6e1852e...d57ac5338e2876bb115a11c7193d20fd63cb7e94)

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