fix(//py): Fix long description section of setup.py

Thanks to @mneilly for catching this

Signed-off-by: Naren Dasan <naren@narendasan.com>
Signed-off-by: Naren Dasan <narens@nvidia.com>

py/setup.py

@@ -190,7 +190,7 @@ def run(self):
                             )
 ]
 
-with open("README.md", "r") as fh:
+with open("README.md", "r", encoding="utf-8") as fh:
     long_description = fh.read()
 
 setup(