Bump pillow from 6.0.0 to 6.2.0

Bumps [pillow](https://github.com/python-pillow/Pillow) from 6.0.0 to 6.2.0.
- [Release notes](https://github.com/python-pillow/Pillow/releases)
- [Changelog](https://github.com/python-pillow/Pillow/blob/master/CHANGES.rst)
- [Commits](python-pillow/Pillow@6.0.0...6.2.0)

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

Author: dependabot[bot]

requirements.txt

@@ -8,7 +8,7 @@ matplotlib==3.0.3
 Shapely==1.6.4.post2
 numpy==1.16.2
 geopandas==0.4.1
-Pillow==6.0.0
+Pillow==6.2.0
 easydict==1.9
 mxnet==1.4.1
 skimage==0.0