[Checkins] [zopefoundation/Products.MailHost] 0b7707: Pin more packages.

[Michael Howitz]

  Branch: refs/heads/master
  Home:   https://github.com/zopefoundation/Products.MailHost
  Commit: 0b77078f11df270562cd33e9773211abdfe120ec
      https://github.com/zopefoundation/Products.MailHost/commit/0b77078f11df270562cd33e9773211abdfe120ec
  Author: Michael Howitz <mh at gocept.com>
  Date:   2020-05-14 (Thu, 14 May 2020)

  Changed paths:
    M buildout.cfg

  Log Message:
  -----------
  Pin more packages.