Merge "Update Unicode emoji data to 15.1" into main am: 4f6825e21d

Original change: https://android-review.googlesource.com/c/platform/external/unicode/+/2824658

Change-Id: I4d83c99d12029029bc8d386f4dfd5d23511fd81f
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>