The value add of updating this package, @DataDrake, is that the update does a lot of bug fixing for Vulkan as well as adds new features for Vulkan and OpenGL. The Vulkan renderer has been broken for me recently, which I discuss the details of in T9326.
Version that does the feature additions and bug updates (not the version I am asking for, but still a higher version than our current one of 20.1.9):
The latest version that I am requesting: https://docs.mesa3d.org/relnotes/20.2.2.html
The source code of version 20.2.2: