Bump pillow from 3.4.1 to 6.2.0 in /solutionbox/ml_workbench/tensorfl…

…ow (#721)

Bumps [pillow](https://github.com/python-pillow/Pillow) from 3.4.1 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@3.4.1...6.2.0)

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

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

solutionbox/ml_workbench/tensorflow/setup.py

@@ -29,7 +29,7 @@
   install_requires=[
     'tensorflow==1.8.0',
     'protobuf==3.1.0',
-    'pillow==3.4.1',  # ML Engine does not have PIL installed
+    'pillow==6.2.0',  # ML Engine does not have PIL installed
   ],
   package_data={
   },