Bump pillow from 7.1.2 to 8.3.2

Bumps [pillow](https://github.com/python-pillow/Pillow) from 7.1.2 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@7.1.2...8.3.2)

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

Signed-off-by: dependabot[bot] <support@github.com>

Pipfile

@@ -25,7 +25,7 @@ django-celery-beat = "~=2.2.1"
 django-celery-results = "~=2.2.0"
 python-slugify = "~=4.0.0"
 openpyxl = "~=3.0.3"
-pillow = "~=8.3.1"
+pillow = "~=8.3.2"
 kombu = "~=5.1.0"
 matplot = "~=0.1.9"
 django-redis = "~=4.12.1"