Bump opencv-python from 4.7.0.68 to 4.8.1.78

Bumps [opencv-python](https://github.com/opencv/opencv-python) from 4.7.0.68 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]>

Author: dependabot[bot]

requirements.txt

@@ -3,7 +3,7 @@ transformers==4.36.2
 diffusers[torch]==0.25.0
 ftfy==6.1.1
 # albumentations==1.3.0
-opencv-python==4.7.0.68
+opencv-python==4.8.1.78
 einops==0.7.0
 pytorch-lightning==1.9.0
 bitsandbytes==0.43.0