Fix release token (risc0#1252) (risc0#1253)

Release v0.19.1 (risc0#1134)

Update docker test Image IDs

Release v0.19.0 (risc0#1064)

Run publish locally

Release 0.19.0-rc.3 (risc0#1045)

* Fixes "Could not launch zkvm" error
* Drop GPU builds from release workflow

Bump version and update install instructions (risc0#1042)

Release v0.19.0-rc.1 (risc0#1020)

The `recursion_zkr.zip` file is too large to publish to crates.io. Thus
this adjusts the build script for `risc0-circuit-recursion` to download
this file from LFS if the file isn't present locally on disk.

Add release workflow (risc0#960)

Bump version to 0.18.0 (risc0#874)