Use new ArchUnit 1.0.0 features/improvements in our tests

[PawelLipski]

    Potentially relevant changes:

Accesses from inside of lambdas are now correctly detected. Before, the origin was set as a synthetic method like lambda$xxx$123 instead. JavaAccess can now be queried for isDeclaredInLambda() to distinguish this from an access outside of a lambda (see TNG/ArchUnit#847; thanks a lot to @oberprah, @FrederikFinckh)

New methods codeUnits().should().onlyBeCalled().by{Classes/Methods/...}That(..)

Originally posted by @PawelLipski in #1211 (comment)

[mkondratek]

Oh, I was just wondering whats wrong now

[PawelLipski]

I went through all ArchUnit tests, can't see any place where we'd clearly benefit from new APIs. Closing