Bump pillow from 8.3.2 to 9.0.1

Bumps [pillow](https://github.com/python-pillow/Pillow) from 8.3.2 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@8.3.2...9.0.1)

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

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

Author: dependabot[bot]

requirements.txt

@@ -16,7 +16,7 @@ grpcio==1.25.0
 httplib2==0.19.0
 idna==2.8
 msgpack==0.6.2
-Pillow==8.3.2
+Pillow==9.0.1
 pkg-resources==0.0.0
 protobuf==3.10.0
 pyasn1==0.4.7