### Check existing issues - [x] I've verified that this request isn't described by any existing issues. ### Request Once the mesa-2604 snap has a stable release, the [spread test](https://github.com/canonical/snapcraft/blob/05c7c6c5efb3a32c5a510b2431514aec9d5d3294/tests/spread/extensions/gpu/task.yaml#L25-L29) should stop installing from edge. ### The problem it solves Updates a spread test that was written before 26.04.