bump perseus to compatible version
bump perseus to compatible version

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