Bump opencv-python from 3.2.0.8 to 4.2.0.32

Bumps [opencv-python](https://github.com/skvark/opencv-python) from 3.2.0.8 to 4.2.0.32.
- [Release notes](https://github.com/skvark/opencv-python/releases)
- [Commits](https://github.com/skvark/opencv-python/commits)

---
updated-dependencies:
- dependency-name: opencv-python
  dependency-type: direct:production
...

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Author: dependabot[bot]

requirements.txt

@@ -6,7 +6,7 @@ kiwisolver==1.3.1
 matplotlib==3.3.3
 networkx==2.5
 numpy==1.19.4
-opencv-python==3.2.0.8
+opencv-python==4.2.0.32
 Pillow==8.3.2
 pkg-resources==0.0.0
 pyparsing==2.4.7