git: openjdk/jdk: 8254982: (tz) Upgrade time-zone data to tzdata2020c

[Sean Coffey]

Changeset: 55a0cad8
Author:    Kiran Sidhartha Ravikumar <kravikumar at openjdk.org>
Committer: Sean Coffey <coffeys at openjdk.org>
Date:      2020-10-23 10:13:08 +0000
URL:       https://git.openjdk.java.net/jdk/commit/55a0cad8

8254982: (tz) Upgrade time-zone data to tzdata2020c

Reviewed-by: erikj, naoto

! make/data/tzdata/VERSION
! make/data/tzdata/australasia
! make/data/tzdata/europe
! test/jdk/java/util/Formatter/BasicDateTime.java