Spine 4.2 Support

[jabuwu]

Todo:

• [x] Add new methods and accessors
• [x] Address the two commented out accessors in animation_state.rs
• [x] Add c wrappers for new libc deps
• [x] Export dragon to 4.2 or remove from example / test assets
• [x] Add Physics enum and pass to update_world_transform and update_world_transform_with
• [x] Changelog
• [x] Docs
• [x] fmt/clippy checks
• [x] Investigate why celestial-circus has a white face when using non-PMA atlas (https://github.com/EsotericSoftware/spine-runtimes/issues/2507)
• [x] miri checks