use Python3 interpreter for Ubuntu 20.04
use Python3 interpreter for Ubuntu 20.04

mitodl/configuration,edx/configuration,arbrandes/edx-configuration,mitodl/configuration,EDUlib/configuration,stvstnfrd/configuration,arbrandes/edx-configuration,arbrandes/edx-configuration,EDUlib/configuration,mitodl/configuration,stvstnfrd/configuration,edx/configuration,edx/configuration,edx/configuration,stvstnfrd/configuration,EDUlib/configuration,mitodl/configuration,arbrandes/edx-configuration,stvstnfrd/configuration,stvstnfrd/configuration,EDUlib/configuration,EDUlib/configuration,arbrandes/edx-configuration