We're updating through 2.3.1 which claims to be just a dependency update
release and then 2.3.2 fixes a bug.
https://github.com/ether/etherpad-lite/blob/v2.3.2/CHANGELOG.md
Updates to the node-oidc-provider library seem to necessitate that we
pass a resource identifier in our token generation request. Update the
testing and our documentation to capture this.
Change-Id: Ib850f80772c146883fd245718425c9d3b1796b36