Bump opencv-python from 4.8.0.76 to 4.8.1.78

Bumps [opencv-python](https://github.com/opencv/opencv-python) from 4.8.0.76 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-python
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

Diff for: Hand-Motion-Detection/requirements.txt

@@ -1,3 +1,3 @@
 numpy==1.25.2
-opencv_python==4.8.0.76
+opencv_python==4.8.1.78
 mediapipe==0.10.5