build(deps-dev): bump scikit-learn from 1.9.0 to 1.9.1 in /demos (#1984)

Bumps [scikit-learn](https://github.com/scikit-learn/scikit-learn) from 1.9.0 to 1.9.1.
- [Release notes](https://github.com/scikit-learn/scikit-learn/releases)
- [Commits](scikit-learn/scikit-learn@1.9.0...1.9.1)

---
updated-dependencies:
- dependency-name: scikit-learn
  dependency-version: 1.9.1
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

demos/moderator/requirements-dev.txt

@@ -3,7 +3,7 @@ trafaret==2.1.1
 pyyaml==6.0.3
 numpy==2.5.3
 pandas==3.0.5
-scikit-learn==1.9.0
+scikit-learn==1.9.1
 scipy==1.18.1
 
 

demos/moderator_bot/requirements-dev.txt

@@ -15,7 +15,7 @@ pluggy==1.6.0
 pytest==9.1.1
 pytest-aiohttp==1.1.1
 pyyaml==6.0.3
-scikit-learn==1.9.0
+scikit-learn==1.9.1
 scipy==1.18.1
 six==1.17.0
 slack_sdk==3.44.1