Bump apps/markus from `a21505e` to `9619d42`
Bump apps/markus from `a21505e` to `9619d42`

Bumps [apps/markus](https://github.com/MarkUsProject/Markus) from `a21505e` to `9619d42`.
- [Release notes](https://github.com/MarkUsProject/Markus/releases)
- [Commits](https://github.com/MarkUsProject/Markus/compare/a21505ef584c15d26456faf28c2512f68874dc7c...9619d42f696b4a147d176ba0be5715fb01816601)

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