Bump SDK revision number to ship an update with Beta 4 am: d16b8ab5ba am: 6309a98617

Original change: https://googleplex-android-review.googlesource.com/c/platform/development/+/19014235

Change-Id: I128bc2102157a4904ee943e998b41f45ac275d30
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>