Bump apps/zammad from `8e7abc4` to `ca88877`
Bump apps/zammad from `8e7abc4` to `ca88877`

Bumps [apps/zammad](https://github.com/zammad/zammad) from `8e7abc4` to `ca88877`.
- [Release notes](https://github.com/zammad/zammad/releases)
- [Commits](https://github.com/zammad/zammad/compare/8e7abc45fb9953ae04d3a135f84621a696fadf91...ca88877bc89b486e64f5c9fddb4fd09e2e0f5afd)

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