Bump pillow from 7.1.2 to 8.3.2

Bumps [pillow](https://github.com/python-pillow/Pillow) from 7.1.2 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@7.1.2...8.3.2)

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

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

Author: dependabot[bot]

requirements.txt

@@ -5,6 +5,6 @@ scikit_image==0.16.2
 matplotlib==2.2.3
 tqdm==4.43.0
 easydict==1.9
-Pillow==7.1.2
+Pillow==8.3.2
 opencv_python
 pycocotools