[Checkins] [zopefoundation/zopetoolkit] 68e379: Update to zope.interface 5.1.0.

[Michael Howitz]

  Branch: refs/heads/master
  Home:   https://github.com/zopefoundation/zopetoolkit
  Commit: 68e379ef02641657a1f9396bfff716ba45639379
      https://github.com/zopefoundation/zopetoolkit/commit/68e379ef02641657a1f9396bfff716ba45639379
  Author: Michael Howitz <mh at gocept.com>
  Date:   2020-09-24 (Thu, 24 Sep 2020)

  Changed paths:
    M ztk-versions.cfg

  Log Message:
  -----------
  Update to zope.interface 5.1.0.