Bump opencv-python in /NLP/Conversational-Recommendation-BASELINE

Bumps [opencv-python](https://github.com/skvark/opencv-python) from 4.1.1.26 to 4.2.0.32.
- [Release notes](https://github.com/skvark/opencv-python/releases)
- [Commits](https://github.com/skvark/opencv-python/commits)

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

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

NLP/Conversational-Recommendation-BASELINE/requirements.txt

@@ -24,7 +24,7 @@ matplotlib==2.2.3
 nltk==3.4
 numpy==1.16.1
 objgraph==3.4.1
-opencv-python==4.1.1.26
+opencv-python==4.2.0.32
 paddlepaddle-gpu==1.6.1.post97
 Pillow==6.2.0
 prettytable==0.7.2