build(deps): update scikit-learn requirement in /requirements

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...1.6.1)

---
updated-dependencies:
- dependency-name: scikit-learn
  dependency-version: 1.6.1
  dependency-type: direct:production
...

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

Author: dependabot[bot]

requirements/pytorch/test.txt

@@ -7,7 +7,7 @@ pytest-random-order ==1.1.0
 
 # needed in tests
 cloudpickle >=1.3, <3.2.0
-scikit-learn >0.22.1, <1.4.0
+scikit-learn >0.22.1, <1.7.0
 numpy >=1.17.2, <1.27.0
 onnx >=1.12.0, <1.17.0
 onnxruntime >=1.12.0, <1.21.0