Update build-tools to ab/8703787 am: dea48703ca am: 726120a5ae am: b7f11306ee am: 7c1c6bd6e6 am: 6eccd1e171

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

Change-Id: I17fa9c7e9ee351938369a03b53466e394b264bc5
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>