Bump opencv-python from 4.1.1.26 to 4.2.0.32

Bumps [opencv-python](https://github.com/skvark/opencv-python) from 4.1.1.26 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
...

Signed-off-by: dependabot[bot] <[email protected]>

requirements.txt

@@ -3,7 +3,7 @@ h5py>=2.10.0
 imageio>=2.6.1
 git+https://github.com/aleju/imgaug
 numpy>=1.17.3
-opencv-python==4.1.1.26
+opencv-python==4.2.0.32
 git+https://github.com/jamesbowman/openexrpython.git
 oyaml>=0.9
 pathlib>=1.0.1