Merge "add AGP 8.12.0-alpha08 prebuilts" into androidx-main am: 74d5c6488b

Original change: https://android-review.googlesource.com/c/platform/prebuilts/androidx/external/+/3682447

Change-Id: I1f35feddab54b2281147c8e9db6c564284771c6c
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>