Bump torch from 2.1.0 to 2.2.0 in /python/tests (#1746)

Bumps [torch](https://github.com/pytorch/pytorch) from 2.1.0 to 2.2.0.
- [Release notes](https://github.com/pytorch/pytorch/releases)
- [Changelog](https://github.com/pytorch/pytorch/blob/main/RELEASE.md)
- [Commits](pytorch/pytorch@v2.1.0...v2.2.0)

---
updated-dependencies:
- dependency-name: torch
  dependency-type: direct:production
...

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

Author: dependabot[bot]

python/tests/requirements.txt

@@ -5,4 +5,4 @@ OpenNMT-tf==2.30.*
 tensorflow-cpu==2.11.*
 pytest
 wurlitzer==3.0.*;platform_system=='Linux'
-torch==2.1.0
+torch==2.2.0