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 linux-runner #4271
linux

00:08:21

passed osx-runner #4272
osx

00:14:59