Bump pillow from 5.0.0 to 6.2.0 in /src/KD

Bumps [pillow](https://github.com/python-pillow/Pillow) from 5.0.0 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@5.0.0...6.2.0)

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

src/KD/requirements.txt

@@ -1,6 +1,6 @@
 scipy==1.0.0
 numpy==1.14.0
-Pillow==5.0.0
+Pillow==6.2.0
 tabulate==0.8.2
 tensorflow==1.7.0rc0
 torch==0.3.0.post4