[Checkins] [zopefoundation/Zope] 57e7fe: Update to current releases of the dependencies.

[Michael Howitz]

  Branch: refs/heads/current-versions
  Home:   https://github.com/zopefoundation/Zope
  Commit: 57e7fe7bd7c032ad34c0328a5be6daace9d0ed7e
      https://github.com/zopefoundation/Zope/commit/57e7fe7bd7c032ad34c0328a5be6daace9d0ed7e
  Author: Michael Howitz <mh at gocept.com>
  Date:   2019-08-07 (Wed, 07 Aug 2019)

  Changed paths:
    M versions-prod.cfg
    M versions.cfg

  Log Message:
  -----------
  Update to current releases of the dependencies.