Bump pillow from 8.3.2 to 8.4.0 (#183)

Bump pillow from 8.3.2 to 8.4.0 (#183)

Bumps [pillow](https://github.com/python-pillow/Pillow) from 8.3.2 to 8.4.0.
- [Release notes](https://github.com/python-pillow/Pillow/releases)
- [Changelog](https://github.com/python-pillow/Pillow/blob/main/CHANGES.rst)
- [Commits](https://github.com/python-pillow/Pillow/compare/8.3.2...8.4.0)

---
updated-dependencies:
- dependency-name: pillow
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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