v3.1.2

This is the first release that we have using our new release mechanism. We haven't migrated fully to our new deployment system yet, but that's getting closer. We chose version 3.1.2 because that's the same as the highest version associated with any of the DE microservices (Terrain). The major changes in this release are:

• Built-in support for OpenTelemetry has been removed from most of our Clojure services because we didn't have a good place to store the telemetry data, and the API of the client library for OpenTelemetry wasn't as stable as we would have liked.
• We took some time to update all of the Clojure dependencies that we could in this release.