Add an update script to automate Bazel binary updates. am: 09bfc72247 am: f0e345e8a5 am: 33b9e5cf4b

Original change: https://android-review.googlesource.com/c/platform/prebuilts/bazel/linux-x86_64/+/1622719

MUST ONLY BE SUBMITTED BY AUTOMERGER

Change-Id: Ie03a4d35918cad663e02c9e5b25bf70f8cc8e76f