sharutils: upgraded package to upstream

Upgraded app-arch/sharutils to version 4.15.2-r2.

BUG=None
TEST=CQ passes

Change-Id: Ia78951ffc227da0da7fc32feaf3fff6018ee8505
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/overlays/portage-stable/+/2923068
Tested-by: Mike Frysinger <vapier@chromium.org>
Reviewed-by: Sergey Frolov <sfrolov@google.com>
Commit-Queue: Mike Frysinger <vapier@chromium.org>
8 files changed