We were forgetting to pass CMake options in the Fuzzers build.
These CMake options contain -DENABLE_CI_BASELINE_CPU=ON, which sets
a baseline architecture to properly allow ccache sharing between
different runners. Without it, it defaults to the native architecture,
which is then cached and can be used on a runner that doesn't have the
same instruction set.
This is targetted at fixing the "Illegal instruction" crash we've been
seeing with the bindings generator.
4a34a60d93