Add benchmark path to artifacts

Forgot to copy the artifacts path from linux to mac so that we save
the benchmark results.
2 jobs for rtoy-issue-87-add-cl-bench in 14 minutes and 59 seconds (queued for 2 seconds)
latest
Status Job ID Name Coverage
  Test
passed #4271
linux
linux-runner

00:08:21

passed #4272
osx
osx-runner

00:14:59