Bump pillow from 8.3.2 to 9.0.0

Bumps [pillow](https://github.com/python-pillow/Pillow) from 8.3.2 to 9.0.0.
- [Release notes](https://github.com/python-pillow/Pillow/releases)
- [Changelog](https://github.com/python-pillow/Pillow/blob/main/CHANGES.rst)
- [Commits](https://github.com/python-pillow/Pillow/compare/8.3.2...9.0.0

)

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

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

requirements.txt

@@ -28,7 +28,7 @@ matplotlib==3.4.2
 msgpack==1.0.2
 multidict==5.1.0
 numpy==1.21.0
-Pillow==8.3.2
+Pillow==9.0.0
 pyasn1==0.4.8
 pyasn1-modules==0.2.8
 pycparser==2.20