media-libs/harfbuzz: Uprev to 2.8.1

BUG=none
TEST=CQ

Change-Id: Id507d6c8c9b3e1f26a54fd6669414f46e3ef7395
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/overlays/portage-stable/+/2947158
Reviewed-by: David Riley <davidriley@chromium.org>
Tested-by: Fergus Dall <sidereal@google.com>
Commit-Queue: Fergus Dall <sidereal@google.com>
3 files changed