Remove groupName from SAML2 attributes
Was removed by https://gitlab.developers.cam.ac.uk/uis/devops/raven/shib-cloud/shib-4-idp-container/-/merge_requests/97
Was actually groupTitle attribute not groupName!
Was removed by https://gitlab.developers.cam.ac.uk/uis/devops/raven/shib-cloud/shib-4-idp-container/-/merge_requests/97
Was actually groupTitle attribute not groupName!