mesa_18.3.3-0.deb not compatible with Ubuntu 22.04

Hi there,

During installation, exception will pop up saying it depends on llvm-6.0 etc but it is not installable on Ubuntu 22.04. The llvm official website seems to say they stop supporting Ubuntu 22.04. 

Hence, could you help me out here by proposing a workaround to have seamless workings among Pyrender, PyOpenGL, and OSMesa? or Updating the latest setup?

Thank you very much.