Bump opencv-python from 4.5.5.62 to 4.7.0.72

Bumps [opencv-python](https://github.com/opencv/opencv-python) from 4.5.5.62 to 4.7.0.72.
- [Release notes](https://github.com/opencv/opencv-python/releases)
- [Commits](https://github.com/opencv/opencv-python/commits)

---
updated-dependencies:
- dependency-name: opencv-python
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

requirements.txt

@@ -2,7 +2,7 @@
 supervisely==6.69.70
 
 opencv-python-headless==4.5.5.62
-opencv-python==4.5.5.62
+opencv-python==4.7.0.72
 
 # base ----------------------------------------
 PyYAML==5.4.1