Bump opencv-python from 4.5.1.48 to 4.8.1.78 in /face/recognition/src

Bumps [opencv-python](https://github.com/opencv/opencv-python) from 4.5.1.48 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
...

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

face/recognition/src/requirements.txt

@@ -1,3 +1,3 @@
 numpy==1.22.0
-opencv-python==4.5.1.48
+opencv-python==4.8.1.78
 face-recognition==1.3.0