rpm2targz: upgraded package to upstream

Upgraded app-arch/rpm2targz to version 2021.03.16.

BUG=None
TEST=CQ passes

Change-Id: Ia6b5785d6002f01f617f7814b4e4bd4a638cf7cf
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/overlays/portage-stable/+/2923069
Tested-by: Mike Frysinger <vapier@chromium.org>
Reviewed-by: Sergey Frolov <sfrolov@google.com>
Commit-Queue: Mike Frysinger <vapier@chromium.org>
4 files changed