Bump pillow from 6.0.0 to 9.0.1

Bumps [pillow](https://github.com/python-pillow/Pillow) from 6.0.0 to 9.0.1.
- [Release notes](https://github.com/python-pillow/Pillow/releases)
- [Changelog](https://github.com/python-pillow/Pillow/blob/main/CHANGES.rst)
- [Commits](python-pillow/Pillow@6.0.0...9.0.1)

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

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

Author: dependabot[bot]

requirements.txt

@@ -3,7 +3,7 @@ psycopg2-binary==2.8.2
 redis==3.2.1
 rq==1.0
 web.py==0.40.dev1
-Pillow==6.0.0
+Pillow==9.0.1
 boto3==1.9.146
 pytest==4.5.0
 pytest-flakes==4.0.0