Bump pillow from 9.1.1 to 9.2.0

Bumps [pillow](https://github.com/python-pillow/Pillow) from 9.1.1 to 9.2.0.
- [Release notes](https://github.com/python-pillow/Pillow/releases)
- [Changelog](https://github.com/python-pillow/Pillow/blob/main/CHANGES.rst)
- [Commits](python-pillow/Pillow@9.1.1...9.2.0)

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

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

requirements.txt

@@ -16,7 +16,7 @@ django-environ==0.9.0
 easy-thumbnails==2.8.1
 icalendar==4.1.0
 invoke==1.7.1
-pillow==9.1.1
+pillow==9.2.0
 reportlab==3.6.11
 requests==2.28.1