Update build-tools to ab/6732571 am: 3df7240bc9 am: a20bd88582 am: f2b034a02e am: 463fa2fb13

Original change: https://android-review.googlesource.com/c/platform/prebuilts/build-tools/+/1392325

Change-Id: Iea88e0d21896c85c2674f5b596abcc4b7baf9d7f