Bump pillow from 8.1.1 to 8.2.0

Bumps [pillow](https://github.com/python-pillow/Pillow) from 8.1.1 to 8.2.0.
- [Release notes](https://github.com/python-pillow/Pillow/releases)
- [Changelog](https://github.com/python-pillow/Pillow/blob/master/CHANGES.rst)
- [Commits](python-pillow/Pillow@8.1.1...8.2.0)

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

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

requirements.txt

@@ -1,7 +1,7 @@
 Flask==1.0.2
 flickrapi==2.1.2
 gunicorn==19.9.0
-Pillow==8.1.1
+Pillow==8.2.0
 pip==19.2
 pytesseract==0.1.6
 setuptools==20.10.1