[Checkins] [zopefoundation/Zope] cf28df: [POC] Add pyupgrade via pre-commit

[Jürgen Gmach]

  Branch: refs/heads/run-pyupgrade-via-pre-commit
  Home:   https://github.com/zopefoundation/Zope
  Commit: cf28df37d69a42e036bfc84fa1eac776dbd25414
      https://github.com/zopefoundation/Zope/commit/cf28df37d69a42e036bfc84fa1eac776dbd25414
  Author: Jürgen Gmach <juergen.gmach at googlemail.com>
  Date:   2020-07-08 (Wed, 08 Jul 2020)

  Changed paths:
    A .pre-commit-config.yaml
    M tox.ini

  Log Message:
  -----------
  [POC] Add pyupgrade via pre-commit

new file:   .pre-commit-config.yaml
modified:   tox.ini