Release 11.2.1

[jrgriffiniii]

There are changes in https://github.com/samvera/active_fedora/tree/11-2-stable which may require another release.

[jeremyf]

Dylan and I walked through the release steps for these commits. We still need to send an Samvera Tech email, but will batch send the whole lot of the patch updates that we're working through. Once we send the email, we'll close this ticket.