[automerger skipped] [DO NOT MERGE] Copy update_prebuilts.py from master into sc-v2-dev-plus-aosp am: 278cab685e -s ours

am skip reason: subject contains skip directive

Original change: https://googleplex-android-review.googlesource.com/c/platform/prebuilts/sdk/+/16044001

Change-Id: Ia6570f4d8b7d6415aed8cf9fcd0275234df15bf7