This includes:

- [Bump version: 0.2.4 → 0.2.5](https://gitlab.com/BuildGrid/buildgrid/-/merge_requests/1258)
- [Reapply "Drop the leases table entirely"](https://gitlab.com/BuildGrid/buildgrid/-/merge_requests/1256)
- [Support reading large blobs as streams](https://gitlab.com/BuildGrid/buildgrid/-/merge_requests/1255)