timezone-data: upgraded package to upstream

Upgraded sys-libs/timezone-data to version 2019c.

BUG=None
TEST=CQ passes

Change-Id: I22a078d19f810278d472c554cf29f18eafce8021
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/overlays/portage-stable/+/2020917
Reviewed-by: Chirantan Ekbote <chirantan@chromium.org>
Reviewed-by: Jungshik Shin <jshin@chromium.org>
Tested-by: Mike Frysinger <vapier@chromium.org>
Commit-Queue: Mike Frysinger <vapier@chromium.org>
4 files changed