[Checkins] [zopefoundation/Zope] 2956cc: change version pin for `chameleon`

[Dieter Maurer]

  Branch: refs/heads/issue717-pttales-4.x
  Home:   https://github.com/zopefoundation/Zope
  Commit: 2956cc23936008ab14186c435d1e391a38a84df7
      https://github.com/zopefoundation/Zope/commit/2956cc23936008ab14186c435d1e391a38a84df7
  Author: dieter <dieter at handshake.de>
  Date:   2020-03-27 (Fri, 27 Mar 2020)

  Changed paths:
    M versions-prod.cfg

  Log Message:
  -----------
  change version pin for `chameleon`