Bump pillow from 8.3.1 to 8.3.2 (#1038)

Bumps [pillow](https://github.com/python-pillow/Pillow) from 8.3.1 to 8.3.2.
- [Release notes](https://github.com/python-pillow/Pillow/releases)
- [Changelog](https://github.com/python-pillow/Pillow/blob/master/CHANGES.rst)
- [Commits](python-pillow/Pillow@8.3.1...8.3.2)

---
updated-dependencies:
- dependency-name: pillow
  dependency-type: direct:production
...

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requirements.txt

@@ -4,7 +4,7 @@ configparser
 Django>=2.2.24,<3.0
 django-formtools>=1.0
 pisa
-Pillow==8.3.1
+Pillow==8.3.2
 anyjson>=0.2.4
 django-authority>=0.4
 django-countries>=4.4