The job ran brew update and then installed whatever Homebrew was publishing, except Gazebo, which stayed on one commit. Those were built against different protobufs, so a release upstream failed the build with no commit here. Check the package repos out at commits recorded in the tree and do not update them. Run on macos-15 only, so the OS label cannot move either.
Assisted-by: Grok:grok-4.7
Signed-off-by: Jacob Dahl <dahl.jakejacob@gmail.com>