Recently I have noticed that gnome-shell version has new release 3.36.4 via below links..
https://phoronix.com/scan.php?page=news_item&px=GNOME-3.36.4-Released
https://www.linuxcompatible.org/story/gnome-3364-released/
I have tried to upgrade to the new release 3.36.4 with below links or similar ones..
How to update gnome-shell?
How to upgrade to the latest GNOME version?
Upgrade gnome-shell in ubuntu12.04
seems the links are older..
with sudo apt update && sudo apt dist-upgrade I am only upgraded to 3.36.3 from 3.36.2
Assuming I have a testing system running Ubuntu 20.04, What is the step by step procedure to install 3.36.4 for testing purpose..