[automerger skipped] Upgrade bundletool to bundletool-20191212.Thu.12 RC00 am: 3b23f6528a -s ours

am skip reason: Change-Id I86a44956577cd8de44735450f13bcab72e92f8d9 with SHA-1 141b98b4d5 is in history

Change-Id: I09f4534094515fd39a2b482941278b01581af78b