Update Python version compatibility specifies
Update Python version compatibility specifies

mrpau/kolibri,indirectlylit/kolibri,indirectlylit/kolibri,learningequality/kolibri,mrpau/kolibri,mrpau/kolibri,learningequality/kolibri,learningequality/kolibri,indirectlylit/kolibri,mrpau/kolibri,indirectlylit/kolibri,learningequality/kolibri