Update Android TZDB from 2020d to 2020f. am: b85cbdff44 am: c7c0cd736e

Original change: https://android-review.googlesource.com/c/platform/system/timezone/+/1544289

MUST ONLY BE SUBMITTED BY AUTOMERGER

Change-Id: Ice2c42708eb413febcdfe5fc42eb5a7ebb400c2e