Bump scikit-learn from 1.2.2 to 1.5.0 in /nl_server

Bumps [scikit-learn](https://github.com/scikit-learn/scikit-learn) from 1.2.2 to 1.5.0.
- [Release notes](https://github.com/scikit-learn/scikit-learn/releases)
- [Commits](scikit-learn/scikit-learn@1.2.2...1.5.0)

---
updated-dependencies:
- dependency-name: scikit-learn
  dependency-type: direct:production
...

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

nl_server/requirements.txt

@@ -11,7 +11,7 @@ lancedb==0.6.8
 markupsafe==2.1.2
 pandas==2.1.0
 pydantic==2.6.4
-scikit-learn==1.2.2
+scikit-learn==1.5.0
 sentence-transformers==2.2.2
 spacy==3.7.4
 torchvision==0.17.2