grep: upgraded package to upstream

Upgraded sys-apps/grep to version 3.5 on amd64, arm, arm64

BUG=None
TEST=Built, deployed and quickly tested on all 3 platforms

Change-Id: I0ebdbe8014d809544f93b62e144f48080747070b
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/overlays/portage-stable/+/2992184
Reviewed-by: Anand K Mistry <amistry@chromium.org>
Reviewed-by: Benjamin Gordon <bmgordon@chromium.org>
Tested-by: Mani Milani <mani@chromium.org>
Commit-Queue: Mani Milani <mani@chromium.org>
5 files changed