Update vpython3 requests Updates the requests version in .vpython3 to the latest available in order to pick up a security fix. Also changes the requested version to the Python 3-only one since Python 2 support was removed from requests. Bug: chromium:1448265 Change-Id: I132cf2a18f59a70a17f04b7fcbb3e65165fa7eb1 Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/4574296 Auto-Submit: Brian Sheedy <bsheedy@chromium.org> Reviewed-by: Yuly Novikov <ynovikov@chromium.org> Commit-Queue: Yuly Novikov <ynovikov@chromium.org>