Bump pillow from 8.2.0 to 8.3.2 in /setup/etc (#21)

Bumps [pillow](https://github.com/python-pillow/Pillow) from 8.2.0 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@8.2.0...8.3.2)

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

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

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

setup/etc/requirements.txt

@@ -45,7 +45,7 @@ parso==0.8.2
 pathspec==0.8.1
 pexpect==4.8.0
 pickleshare==0.7.5
-Pillow==8.2.0
+Pillow==8.3.2
 ply==3.11
 prompt-toolkit==3.0.18
 ptyprocess==0.7.0