This won't affect anything at present, but will give us a working
wheel for mac-arm64 if that platform is later added to match_tags.

Bug: 1233745
Change-Id: Ib3126d80d488fc9170713482dede666617c23129
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/tools/depot_tools/+/3115585
Auto-Submit: Brian Ryner <bryner@google.com>
Commit-Queue: Dirk Pranke <dpranke@google.com>
Reviewed-by: Dirk Pranke <dpranke@google.com>