build(deps): bump opencv-contrib-python from 4.7.0.72 to 4.8.1.78

Bumps [opencv-contrib-python](https://github.com/opencv/opencv-python) from 4.7.0.72 to 4.8.1.78.
- [Release notes](https://github.com/opencv/opencv-python/releases)
- [Commits](https://github.com/opencv/opencv-python/commits)

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

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

requirements.txt

@@ -2,7 +2,7 @@ click==8.1.3
 colorama==0.4.6
 mypy-extensions==1.0.0
 numpy==1.24.2
-opencv-contrib-python==4.7.0.72
+opencv-contrib-python==4.8.1.78
 packaging==23.0
 pathspec==0.11.1
 platformdirs==3.2.0