Bump pillow from 8.2.0 to 9.3.0

Bumps [pillow](https://github.com/python-pillow/Pillow) from 8.2.0 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@8.2.0...9.3.0)

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

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

Author: dependabot[bot]

requirements.txt

@@ -28,7 +28,7 @@ Jinja2==2.11.3
 Markdown==3.2.2
 MarkupSafe==1.1.1
 packaging==20.4
-Pillow==8.2.0
+Pillow==9.3.0
 psycopg2==2.8.5
 pyparsing==2.4.7
 python-memcached==1.59