Bump pillow in /python/OpenVINO_EP/yolov4_object_detection (#38)

Bumps [pillow](https://github.com/python-pillow/Pillow) from 8.3.1 to 8.3.2.
- [Release notes](https://github.com/python-pillow/Pillow/releases)
- [Changelog](https://github.com/python-pillow/Pillow/blob/master/CHANGES.rst)
- [Commits](python-pillow/Pillow@8.3.1...8.3.2)

---
updated-dependencies:
- dependency-name: pillow
  dependency-type: direct:production
...

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python/OpenVINO_EP/yolov4_object_detection/requirements.txt

@@ -3,7 +3,7 @@ flatbuffers==2.0
 numpy==1.21.1
 onnx==1.10.1
 opencv-python==4.5.3.56
-Pillow==8.3.1
+Pillow==8.3.2
 protobuf==3.17.3
 scipy==1.7.1
 six==1.16.0