repo: upgraded package to upstream

Upgraded dev-vcs/repo to version 2.4 for more Python 3 support.

BUG=gerrit:10418
TEST=CQ passes

Change-Id: I7a77801b8c7e37b3f1f4728839f2ec96d65732f6
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/overlays/portage-stable/+/2053406
Commit-Queue: Mike Frysinger <vapier@chromium.org>
Tested-by: Mike Frysinger <vapier@chromium.org>
Reviewed-by: Michael Mortensen <mmortensen@google.com>
3 files changed