[Checkins] [zopefoundation/Zope] ff9661: Use the latest version.

[Michael Howitz]

  Branch: refs/heads/zope.interface-5.1.1-4.x
  Home:   https://github.com/zopefoundation/Zope
  Commit: ff9661f0e2c86243032b84abe2ce6091a500f3d3
      https://github.com/zopefoundation/Zope/commit/ff9661f0e2c86243032b84abe2ce6091a500f3d3
  Author: Michael Howitz <mh at gocept.com>
  Date:   2020-10-02 (Fri, 02 Oct 2020)

  Changed paths:
    M versions-prod.cfg

  Log Message:
  -----------
  Use the latest version.