grep: upgraded package to upstream

Upgraded sys-apps/grep to version 3.4 on amd64

BUG=chromium:1117638
TEST=cros_run_unit_tests --board=hatch,arm-generic

Change-Id: I6707769bb4b8da7fb86ffd5e468ded4ef175bc2e
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/overlays/portage-stable/+/2405365
Reviewed-by: Benjamin Gordon <bmgordon@chromium.org>
Tested-by: Kyra Moed <kmoed@google.com>
Commit-Queue: Kyra Moed <kmoed@google.com>
3 files changed