Merge "Update app icon shadows" into tm-dev am: 2b6700a9 am: 66ec297f

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Launcher3/+/17937870



Change-Id: I8448333160924d5a75627602b3fe0602e92cd65a
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>