Bump pillow from 6.2.2 to 9.3.0

Bumps [pillow](https://github.com/python-pillow/Pillow) from 6.2.2 to 9.3.0.
- [Release notes](https://github.com/python-pillow/Pillow/releases)
- [Changelog](https://github.com/python-pillow/Pillow/blob/main/CHANGES.rst)
- [Commits](python-pillow/Pillow@6.2.2...9.3.0)

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

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

Author: dependabot[bot]

requirements.txt

@@ -8,7 +8,7 @@ django-filter==1.1.0
 Markdown==2.6.11
 httpie==1.0.3
 idna==2.6
-Pillow==6.2.2
+Pillow==9.3.0
 Pygments==2.2.0
 requests==2.20.0
 urllib3==1.24.2