update_engine: use ; delimiter am: 0215aa7b06 am: 3d3db0792d

Original change: https://android-review.googlesource.com/c/platform/system/update_engine/+/3219875

Change-Id: I6f9b8fbc83de1cd5bb52a16be2f2ec0f51e2bd82
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>