snappy: upgraded package to upstream

Upgraded app-arch/snappy to version 1.1.8.

BUG=None
TEST=CQ passes

Change-Id: Ie71075833a436bdded1ed472a2ab1a131a80194a
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/overlays/portage-stable/+/2923065
Tested-by: Mike Frysinger <vapier@chromium.org>
Reviewed-by: Sergey Frolov <sfrolov@google.com>
Commit-Queue: Mike Frysinger <vapier@chromium.org>
4 files changed