Bump opencv-python from 4.5.2.54 to 4.5.3.56

Bumps [opencv-python](https://github.com/skvark/opencv-python) from 4.5.2.54 to 4.5.3.56.
- [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
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

requirements.txt

@@ -5,7 +5,7 @@ pigpio==1.78
 pyserial==3.5
 nidaqmx==0.5.7
 click==8.0.1
-opencv-python==4.5.2.54
+opencv-python==4.5.3.56
 opencv-contrib-python==4.5.2.54
 numpy>=1.14.5
 pandas==1.2.5