Can you please add checksum (sha256) to release assets

[shishini]

Is it possible to add checksum SHA256 to each release asset on github releases (https://github.com/livebook-dev/livebook/releases)
This will make downloads a little bit more secure

Thanks

[josevalim]

I believe the goal is to use the attestation API for our artifacts, so yes, we want to do this sooner than later.