Bump scikit-learn from 0.24.1 to 1.4.1.post1 in /src/Backend

Bumps [scikit-learn](https://github.com/scikit-learn/scikit-learn) from 0.24.1 to 1.4.1.post1.
- [Release notes](https://github.com/scikit-learn/scikit-learn/releases)
- [Commits](scikit-learn/scikit-learn@0.24.1...1.4.1.post1)

---
updated-dependencies:
- dependency-name: scikit-learn
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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