Merge "update to 1.2.2 branch (20ef03e)" am: 223ae75fed am: fd8418a39d am: 4ec16aec45 am: 2de294c063 am: 17014071a3

Original change: https://android-review.googlesource.com/c/platform/external/webp/+/2060423

Change-Id: I83863eb915e4204c035bda3e066aceb03778b914
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>