[Security] This package depends on a vulnerable version of `MessagePack`

[ZzZombo]

Please update the dependency to a more secure version of it. While v3.x is already out, there are other v2.5x versions that aren't reported to be vulnerable to exploits if that helps.

[ghhv]

fyi, the current maintained version of Fusion is now located here.
https://github.com/ActualLab/Fusion