Imaging should depend on main 5.3 because both of these modules updated their dependency to Guava 16. Reason: the API in Guava changed, so if the older Guava 10 is brought in by a module it can cause problems.

Updating dependency is not trivial because depending on main 5.3 causes 2 imaging unit tests to fail:

testRequestForSimilarUncachedImageOnlyGeneratesItOnce(info.magnolia.imaging.caching.CachingImageStreamerRepositoryTest)

testNodeParameterProviderHandlesTimestampsProperly(info.magnolia.imaging.SelfTest)

Note: update parent pom to 28 (or latest version) as well.