Replace JAXB w/ Jackson for XML deserialization?

[ultraq]

Some of the Java compatibility problems have stemmed from using JAXB, which was included with Java in 8-, but some of its dependencies have been excluded in 9+ as part of Java's goal of making the core more modular.

It might help with future compatibility to remove this dependency, using something outside of it like Jackson for XML deserialization 🤔