[automerged blank] update OTA script in tm-mainline-prod to the latest version. 2p: 8720cc66fe

Blank merge reason: Change-Id Iaa317a3a4b8addbca8ea987aee9953c78fa1a679 with SHA-1 c890e48d81 is in history

Original change: https://googleplex-android-review.googlesource.com/c/platform/system/update_engine/+/23200961

Bug: 279622634
Change-Id: I503241a6abec91fad0365c6ca52172782a905d3d
Merged-In: Iaa317a3a4b8addbca8ea987aee9953c78fa1a679