build(deps): bump torch from 2.9.0 to 2.9.1 in /requirements (#21439)

Bumps [torch](https://github.com/pytorch/pytorch) from 2.9.0 to 2.9.1.
- [Release notes](https://github.com/pytorch/pytorch/releases)
- [Changelog](https://github.com/pytorch/pytorch/blob/main/RELEASE.md)
- [Commits](https://github.com/pytorch/pytorch/compare/v2.9.0...v2.9.1)

---
updated-dependencies:
- dependency-name: torch
  dependency-version: 2.9.1
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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