swig: upgraded package to upstream

Upgraded dev-lang/swig to version 4.0.0.

BUG=chromium:985180
TEST=CQ passes

Change-Id: I55169d8e1eb4c4b899e4254fe25ead4d1c0dc3cd
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/overlays/portage-stable/+/2212960
Reviewed-by: Michael Mortensen <mmortensen@google.com>
Tested-by: Mike Frysinger <vapier@chromium.org>
Commit-Queue: Mike Frysinger <vapier@chromium.org>
3 files changed