Update build-tools to ab/8703787 am: dea48703ca am: 726120a5ae am: b7f11306ee am: 7c1c6bd6e6

Original change: https://android-review.googlesource.com/c/platform/prebuilts/build-tools/+/2122034

Change-Id: Id1030799d39e703c2e054980bf9145708ec2a5c4
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>