Bump pillow from 7.1.1 to 8.3.2

Bumps [pillow](https://github.com/python-pillow/Pillow) from 7.1.1 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@7.1.1...8.3.2)

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

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

Author: dependabot[bot]

requirements.txt

@@ -9,7 +9,7 @@ itsdangerous==1.1.0
 Jinja2==2.11.2
 MarkupSafe==1.1.1
 numpy==1.18.3
-Pillow==7.1.1
+Pillow==8.3.2
 python-dotenv==0.13.0
 visitor==0.1.3
 Werkzeug==0.15.6

setup.py

@@ -15,7 +15,7 @@
         'Jinja2==2.11.2',
         'MarkupSafe==1.1.1',
         'numpy==1.18.3',
-        'Pillow==7.1.1',
+        'Pillow==8.3.2',
         'torch==1.5.0',
         'torchvision==0.6.0',
         'visitor==0.1.3',