Update pipfile due to security risk in dependency Pillow < 9.0.0

Author: RichardObi

Pipfile

@@ -15,7 +15,7 @@ scikit-image = "*"
 scipy = "*"
 sphinx = "*"
 sphinx-rtd-theme = "*"
-pillow = ">=8.3.2"
+pillow = "==9.0.0"
 visdom = "*"
 dominate = "*"
 torchvision = "*"