Bump pillow from 5.4.1 to 9.3.0 in /python-ff

Bumps [pillow](https://github.com/python-pillow/Pillow) from 5.4.1 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@5.4.1...9.3.0)

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

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

Author: dependabot[bot]

python-ff/requirements.txt

@@ -55,7 +55,7 @@ parso==0.4.0
 pbr==5.2.0
 pexpect==4.6.0
 pickleshare==0.7.5
-Pillow==5.4.1
+Pillow==9.3.0
 portpicker==1.3.1
 prometheus-client==0.6.0
 prompt-toolkit==2.0.9