[automerger skipped] DO NOT MERGE Update Android TZDB from 2020f to 2021a. [R] am: 1cc4fe84a0 -s ours

am skip reason: skip tag Change-Id I8d2b2f09cf56441ef708da652003ab5a85cf18f6 with SHA-1 ba1a76e24c is already in history

Original change: https://googleplex-android-review.googlesource.com/c/platform/system/timezone/+/13996968

Change-Id: Id2640611d2b7f4bfb9525e3cff3e5b77402f4b75