update pillow

Author: jeet4320

tensorflow/training/docker/2.3/py3/cu110/Dockerfile.gpu

@@ -182,7 +182,7 @@ RUN ${PIP} install --no-cache-dir -U \
     scipy==1.5.2 \
     scikit-learn==0.23 \
     pandas==1.1 \
-    Pillow==7.2.0 \
+    Pillow==8.2.0 \
     python-dateutil==2.8.1 \
     # install PyYAML>=5.4.1 to avoid conflict with latest awscli
     "pyYAML>=5.4.1,<5.5" \