Maintenance: Bump test-unit from 3.5.1 to 3.5.2
Maintenance: Bump test-unit from 3.5.1 to 3.5.2

Bumps [test-unit](https://github.com/test-unit/test-unit) from 3.5.1 to 3.5.2.
- [Release notes](https://github.com/test-unit/test-unit/releases)
- [Commits](https://github.com/test-unit/test-unit/compare/3.5.1...3.5.2)
zammad/zammad,monotek/zammad,zammad/zammad,monotek/zammad,zammad/zammad,monotek/zammad,zammad/zammad,monotek/zammad,monotek/zammad,monotek/zammad,zammad/zammad,zammad/zammad