Update build-tools to ab/6629626 am: f612a0670c am: e1a34a3f07 am: 6c2c6a1b15

Original change: https://android-review.googlesource.com/c/platform/prebuilts/build-tools/+/1350708

Change-Id: I121ea649e4ae17d83a52584708556e7437042a40