Integration test using Caffeine 3

[shakuzen]

We should add an integration test that uses Caffeine 3 to catch these kinds of issues, while allowing us to continue to compile against and remain compatible with Caffeine 2.

Originally posted by @shakuzen in #6973

While the naming is misleading, we have existing integration tests like this in the samples folder.

[inshining]

@shakuzen Hello,
i can take this for adding an integration test whith Caffeine 3.

[shakuzen]

@inshining thanks for the offer to help. Feel free to open a pull request for this, and let us know if you have any questions.