Bump pillow from 6.2.1 to 9.0.1

Bumps [pillow](https://github.com/python-pillow/Pillow) from 6.2.1 to 9.0.1.
- [Release notes](https://github.com/python-pillow/Pillow/releases)
- [Changelog](https://github.com/python-pillow/Pillow/blob/main/CHANGES.rst)
- [Commits](python-pillow/Pillow@6.2.1...9.0.1)

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

Signed-off-by: dependabot[bot] <[email protected]>

requirements.txt

@@ -10,7 +10,7 @@ django-user-messages==0.8.0
 django-widget-tweaks==1.4.12
 easy-thumbnails==2.8.1
 psycopg2==2.8.4
-Pillow==6.2.1
+Pillow==9.0.1
 requests==2.27.1
 gunicorn[gevent]==20.1.0
 gevent==21.12.0