[Checkins] [zopefoundation/cipher.encryptingstorage] df429d: Fix Travis by updating zc.buildout version

[Jürgen Gmach]

  Branch: refs/heads/fix-travis
  Home:   https://github.com/zopefoundation/cipher.encryptingstorage
  Commit: df429d6b7034e2cfcb38daea2ae7fca1a1529cde
      https://github.com/zopefoundation/cipher.encryptingstorage/commit/df429d6b7034e2cfcb38daea2ae7fca1a1529cde
  Author: Jürgen Gmach <juergen.gmach at googlemail.com>
  Date:   2020-05-14 (Thu, 14 May 2020)

  Changed paths:
    M buildout.cfg
    M requirements.txt

  Log Message:
  -----------
  Fix Travis by updating zc.buildout version

modified:   buildout.cfg
modified:   requirements.txt