Switch deqp merge to python3 Got broken by https://crrev.com/c/3600911 and that somehow doesn't break builds, just says "json.output (invalid)" as the script raised an exception (ImportError: No module named pathlib). The script is executed using sys.executable so changing shebang doesn't work. Bug: angleproject:6854 Change-Id: I38d72755ed9d1d0983439e017c616cfbe8c52b17 Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/3634727 Commit-Queue: Jamie Madill <jmadill@chromium.org> Reviewed-by: Jamie Madill <jmadill@chromium.org>