Bump scikit-learn in /examples/ray/batch-split-proxy/training

Bumps [scikit-learn](https://github.com/scikit-learn/scikit-learn) from 0.23.2 to 1.0.1.
- [Release notes](https://github.com/scikit-learn/scikit-learn/releases)
- [Commits](scikit-learn/scikit-learn@0.23.2...1.0.1)

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

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

examples/ray/batch-split-proxy/training/requirements.txt

@@ -1,6 +1,6 @@
 alibi==0.5.4
 pandas==1.1.2
-scikit-learn==0.23.2
+scikit-learn==1.0.1
 simpletransformers==0.48.5
 # tensorboardX==1.9
 torch==1.6.0