Update test dependencies

[FlorianHockmann]

This updates JUnit, TestContainers, Lombok, and Mockito together as it wasn't possible to only update TestContainers alone since it also depends on JUnit, see PR #2972.
The same applies to Mockito.

These changes were necessary to update Mockito to v4:

Import of org.mockito.Matchers needed to be changed to org.mockito.ArgumentMatchers. Matchers was already only an alias for ArgumentMatchers before as described in the release notes:
https://github.com/mockito/mockito/releases/tag/v4.0.0

any() is the replacement for anyObject():
mockito/mockito#1931

Calling property() on a mocked StandardVertex resulted in a NullPointer exception, but we can also simply use a DetachedProperty as all accesses to that property on the vertex are also already mocked.

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