Created by: rijnhard
change all debian deps to python3 drop python2 completely
relates to https://github.com/pwr-Solaar/Solaar/issues/656
Attempting to address https://github.com/pwr-Solaar/Solaar/issues/696
@pfps I dont know who has access to the PPA, it would be useful if we could build a separate branch to test. This is guesswork at this stage