[Checkins] [zopefoundation/Zope] 544eaa: Updated master versions based on 4.x versions. (#882)

[Maurits van Rees]

  Branch: refs/heads/master
  Home:   https://github.com/zopefoundation/Zope
  Commit: 544eaa154cdc695d5720c82a259602a5987686f4
      https://github.com/zopefoundation/Zope/commit/544eaa154cdc695d5720c82a259602a5987686f4
  Author: Maurits van Rees <m.van.rees at zestsoftware.nl>
  Date:   2020-07-31 (Fri, 31 Jul 2020)

  Changed paths:
    M constraints.txt
    M requirements-full.txt
    M versions-prod.cfg
    M versions.cfg

  Log Message:
  -----------
  Updated master versions based on 4.x versions. (#882)

I copied them over, including not yet merged zodbupdate 1.5, and edited to prevent unwanted changes.
I did this because I noticed that ZODB was still at 5.5.1 instead of 5.6.0.
All updated versions are newer versions.