Use auth token to find current retrospective
When we update the description of the current retrospective, we need to be authenticated (as it's a confidential issue). I added GitLab Bot as a Reporter to the group, so the other step was to use its auth token when finding this issue.
This failed this morning: https://gitlab.com/gitlab-org/backend-retrospectives/pipelines/32371204
/cc @lmcandrew @rnienaber