Bump apps/markus from `71df754` to `9b28028`
Bump apps/markus from `71df754` to `9b28028`

Bumps [apps/markus](https://github.com/MarkUsProject/Markus) from `71df754` to `9b28028`.
- [Release notes](https://github.com/MarkUsProject/Markus/releases)
- [Commits](https://github.com/MarkUsProject/Markus/compare/71df75410dde355b267592ef565233524b968ffa...9b2802842ffa59867f75b0d1a9347120a14a9e22)

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