Upgrade project dependencies to use XStream 1.2

Currently, Confluence is stuck in the dark ages, using XStream 1.1.1. XStream 1.2 provides several enhancements which are critical to one of my plugins, and impossible to work around in 1.1.1. And after several attempts, it seems to be impossible to get it working by bundling XStream 1.2 and its dependencies in the plugin - something just doesn't want to work at a low level.

Is there any chance this could be updated for Confluence 2.3? 1.2 is, as far as I can tell, backwards-compatible with 1.1.1, so long as nothing complex is being done with it.