[Checkins] [zopefoundation/Products.ZCatalog] 4f9d4d: Use Python 3.9 final

[Jürgen Gmach]

  Branch: refs/heads/all-repos_autofix_all-repos-sed
  Home:   https://github.com/zopefoundation/Products.ZCatalog
  Commit: 4f9d4d9539c5289e56dbe69adced8e612a8c7446
      https://github.com/zopefoundation/Products.ZCatalog/commit/4f9d4d9539c5289e56dbe69adced8e612a8c7446
  Author: Jürgen Gmach <juergen.gmach at googlemail.com>
  Date:   2020-10-28 (Wed, 28 Oct 2020)

  Changed paths:
    M .travis.yml

  Log Message:
  -----------
  Use Python 3.9 final

Committed via https://github.com/asottile/all-repos