Bump rarfile from 4.1 to 4.2 in /requirements (#1982)

Bumps [rarfile](https://github.com/markokr/rarfile) from 4.1 to 4.2.
- [Release notes](https://github.com/markokr/rarfile/releases)
- [Changelog](https://github.com/markokr/rarfile/blob/master/doc/news.rst)
- [Commits](https://github.com/markokr/rarfile/compare/v4.1...v4.2)

---
updated-dependencies:
- dependency-name: rarfile
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

requirements/datasets.txt

@@ -5,7 +5,7 @@ opencv-python==4.9.0.80
 pycocotools==2.0.7
 pyvista==0.43.4
 radiant-mlhub==0.4.1
-rarfile==4.1
+rarfile==4.2
 scikit-image==0.22.0
 scipy==1.13.0
 zipfile-deflate64==0.2.0