[Checkins] [zopefoundation/zopetoolkit] 26607a: Update lxml to Python 3.8b1 compatible version

[Michael Howitz]

  Branch: refs/heads/icemac-patch-1
  Home:   https://github.com/zopefoundation/zopetoolkit
  Commit: 26607ad73c9d47e7946ac7b9b936e3796fa11043
      https://github.com/zopefoundation/zopetoolkit/commit/26607ad73c9d47e7946ac7b9b936e3796fa11043
  Author: Michael Howitz <mh at gocept.com>
  Date:   2019-06-11 (Tue, 11 Jun 2019)

  Changed paths:
    M ztk-versions.cfg

  Log Message:
  -----------
  Update lxml to Python 3.8b1 compatible version