Upgrade the Cinnamon desktop environment to version 4.8
This version uses Python 3 instead of the expired Python 2.7
From the main PR (249856):
" There are a couple known issues:
- x11-fm/nemo crashes upon closing a window or tab.
- x11/cinnamon-screensaver unlocking doesn't work, most likely due to a missing PAM (Linux-PAM?) integration. Both of these issues are being worked on.
I've been dogfooding since Cinnamon 4.0, and apart from those issues, everything works."
PR: 249771
PR: 249851
PR: 249855
PR: 249856
PR: 249857
PR: 249858
Submitted by: Charlie Li