Upgrade xz-embedded to d4a9bc83c72d8087fe36ff388e89599626da7873 am: 31ddfa643c am: ffdd93b99c

Original change: https://android-review.googlesource.com/c/platform/external/xz-embedded/+/3108998

Change-Id: I71e34c7c5c7b3e66f65752d7711741786c8f45aa
Signed-off-by: Automerger Merge Worker <[email protected]>