Bump opencv-python from 4.1.2.30 to 4.2.0.32

Bumps [opencv-python](https://github.com/skvark/opencv-python) from 4.1.2.30 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] <support@github.com>

requirements.txt

@@ -2,4 +2,4 @@ Flask==1.1.1
 Flask-Bootstrap==3.3.7.1
 Jinja2==2.11.3
 numpy==1.18.1
-opencv-python==4.1.2.30
+opencv-python==4.2.0.32