* refactor: move tests of leader-followers into correct package
* dep: remove version constraint for Mockito in acyclic-visitor
* dep: remove version constraint for Mockito in caching
* chore: cleanup mockito-core import on some POMs
* dep: upgrade core.mocktio 3.5.6 to 4.5.1
"- org.mockito.Mockito#verifyZeroInteractions an alias of verifyNoMoreInteractions"
https://github.com/mockito/mockito/commit/caf35b24e2764df0498469526ecb3e7ec68a0430