[automerger skipped] RESTRICT AUTOMERGE Update Android TZDB from 2020d to 2020f. [R] am: a387d614ac -s ours am: 6fe3ad560f -s ours

am skip reason: subject contains skip directive

Original change: https://googleplex-android-review.googlesource.com/c/platform/system/timezone/+/13948665

Change-Id: Idf2d52ea6c82a0476c9a4c0c06a27b8838d90979