sed: upgraded package to upstream

Upgraded sys-apps/sed to version 4.7 on amd64, arm, arm64

BUG=chromium:1073615
TEST=Build Success

Change-Id: Ic597542506c4c4a3a33e62cdd8db8591aa670bd2
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/overlays/portage-stable/+/2162005
Reviewed-by: Mike Frysinger <vapier@chromium.org>
Tested-by: Victor Ding <victording@chromium.org>
Auto-Submit: Victor Ding <victording@chromium.org>
Commit-Queue: Victor Ding <victording@chromium.org>
6 files changed