16.2.1

What's Changed

• run-task: wait on child processes when we're pid 1. by @jcristau in #810
• Fix test_util_archive.py by @ahal in #798
• Restore list_artifacts to its correct behavior by @Eijebong in #811
• Update taskcluster to 91+ to fix get_artifact by @Eijebong in #815
• chore: version bump 16.2.1 by @ahal in #817

Full Changelog: 16.2.0...16.2.1