Update Android to tzdb 2020a [Q branch] This change is associated with tzdb 2020a changes in system/timezone. This change was generated using the CLDR patch from https://unicode-org.atlassian.net/browse/CLDR-13739 It was compared with the ICU patch from https://unicode-org.atlassian.net/browse/ICU-21094 Bug: 155047654 Test: ICU4C host tests (no new breakages) Test: ICU4J host tests (no breakages) Test: See associated system/timezone change Merged-In: I7102ef8296d3e11723c64e37f845f611e7ea47df Change-Id: I7102ef8296d3e11723c64e37f845f611e7ea47df (cherry picked from commit a3cdb6f78de45d071f93e8189e352d31a0138b24) (cherry picked from commit 0564416cf66e6b609880e7a608b9190939899aa6)