Update check-manifest to 0.33

[pyup-bot]

There's a new version of check-manifest available.
You are currently using 0.31. I have updated it to 0.33

Changelog

0.33

---

• Fix WindowsError due to git submodules in subdirectories
  (73 <https://github.com/mgedmin/check-manifest/pull/73>__).
  Contributed by Loren Gordon.

0.32

---

• New config/command line option to ignore bad ideas (ignore-bad-ideas)
  (issue 67 <https://github.com/mgedmin/check-manifest/issues/67>__).
  Contributed by Brecht Machiels.
• Files named .hgsigs are ignored by default. Contributed by Jakub Wilk.

Got merge conflicts? Close this PR and delete the branch. I'll create a new PR for you.

Happy merging! 🤖