build(deps): update scikit-learn requirement

Updates the requirements on [scikit-learn](https://github.com/scikit-learn/scikit-learn) to permit the latest version.
- [Release notes](https://github.com/scikit-learn/scikit-learn/releases)
- [Commits](scikit-learn/scikit-learn@0.22.2...1.4.0)

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

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

requirements/_test.txt

@@ -2,5 +2,5 @@ coverage >=5.0
 pytest >=6.0
 pytest-cov
 
-scikit-learn >0.22.1, <1.4.0
+scikit-learn >0.22.1, <1.5.0
 torchmetrics >=0.8.0, <1.3.0