JSR currently uses [`fresh@2.0.0-alpha.25`](https://github.com/jsr-io/jsr/blob/89e2426cc3a88807d65561a341589473fe86394c/frontend/deno.json#L18). Having another project in the Deno ecosystem should help provide a test bench for the upcoming release. https://github.com/jsr-io/jsr/pull/558 might provide some insight into how this migration might be possible. @lucacasonato, what was the process of performing this upgrade?