Bump pillow from 7.0.0 to 8.3.2 in /TensorFlow/squeezenet/src

Bumps [pillow](https://github.com/python-pillow/Pillow) from 7.0.0 to 8.3.2.
- [Release notes](https://github.com/python-pillow/Pillow/releases)
- [Changelog](https://github.com/python-pillow/Pillow/blob/master/CHANGES.rst)
- [Commits](python-pillow/Pillow@7.0.0...8.3.2)

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

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

Author: dependabot[bot]

TensorFlow/squeezenet/src/requirements.txt

@@ -15,7 +15,7 @@ Markdown==3.2.1
 matplotlib==3.1.3
 numpy==1.18.1
 opt-einsum==3.1.0
-Pillow==7.0.0
+Pillow==8.3.2
 protobuf==3.11.3
 pyparsing==2.4.6
 python-dateutil==2.8.1