[Checkins] [zopefoundation/zope.security] 00a4b7: Update AppVeyor config, too.

[Michael Howitz]

  Branch: refs/heads/update
  Home:   https://github.com/zopefoundation/zope.security
  Commit: 00a4b71c702b4f7c3bf1ee6187cd3f1edeaabb9f
      https://github.com/zopefoundation/zope.security/commit/00a4b71c702b4f7c3bf1ee6187cd3f1edeaabb9f
  Author: Michael Howitz <mh at gocept.com>
  Date:   2019-04-02 (Tue, 02 Apr 2019)

  Changed paths:
    M appveyor.yml

  Log Message:
  -----------
  Update AppVeyor config, too.