Bump pillow from 3.2.0 to 7.1.0

Bumps [pillow](https://github.com/python-pillow/Pillow) from 3.2.0 to 7.1.0.
- [Release notes](https://github.com/python-pillow/Pillow/releases)
- [Changelog](https://github.com/python-pillow/Pillow/blob/master/CHANGES.rst)
- [Commits](python-pillow/Pillow@3.2.0...7.1.0)

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

Author: dependabot[bot]

requirements.txt

@@ -38,7 +38,7 @@ pelican==3.6.3
 pexpect==4.0.1
 pickleshare==0.7.2
 Pillow==3.2.0
-Pillow==6.2.0
+Pillow==7.1.0
 pkg-resources==0.0.0
 ptyprocess==0.5.1
 #py3minepi==0.0.1