12D4e is latest Xcode 12.4 as of http://crrev.com/c/2715984

Bug: angleproject:2634
Change-Id: I0e0412c7911a109d5351b73a4676c018ee461318
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2743669Reviewed-by: Jamie Madill <jmadill@chromium.org>
Commit-Queue: Yuly Novikov <ynovikov@chromium.org>