I have a update on this topic, however the answer by @alexal probably still stands.
This guide explains how to apply software updates on Viya. Perhaps at certain versions there will be some specifics to consider, as on 9.4. Let's see if there is any when 3.3 is released.
The SAS Users Group for Administrators (SUGA) is open to all SAS administrators and architects who install, update, manage or maintain a SAS deployment.
Learn how to install the SAS Viya CLI and a few commands you may find useful in this video by SAS’ Darrell Barton.
Find more tutorials on the SAS Users YouTube channel.