Bump pillow from 6.2.0 to 9.3.0

Bumps [pillow](https://github.com/python-pillow/Pillow) from 6.2.0 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@6.2.0...9.3.0)

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

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

requirements.txt

@@ -1,2 +1,2 @@
 -i https://pypi.org/simple/
-pillow==6.2.0
+pillow==9.3.0