chore(deps): bump torch from 2.5.1 to 2.8.0 in /backends/python/server

Bumps [torch](https://github.com/pytorch/pytorch) from 2.5.1 to 2.8.0.
- [Release notes](https://github.com/pytorch/pytorch/releases)
- [Changelog](https://github.com/pytorch/pytorch/blob/main/RELEASE.md)
- [Commits](pytorch/pytorch@v2.5.1...v2.8.0)

---
updated-dependencies:
- dependency-name: torch
  dependency-version: 2.8.0
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

backends/python/server/requirements.txt

@@ -56,7 +56,7 @@ setuptools==75.6.0 ; python_version >= "3.9" and python_version < "3.13"
 sympy==1.13.1 ; python_version >= "3.9" and python_version < "3.13"
 threadpoolctl==3.5.0 ; python_version >= "3.9" and python_version < "3.13"
 tokenizers==0.20.3 ; python_version >= "3.9" and python_version < "3.13"
-torch==2.5.1 ; python_version >= "3.9" and python_version < "3.13"
+torch==2.8.0 ; python_version >= "3.9" and python_version < "3.13"
 tqdm==4.67.1 ; python_version >= "3.9" and python_version < "3.13"
 transformers==4.46.3 ; python_version >= "3.9" and python_version < "3.13"
 triton==3.1.0 ; platform_system == "Linux" and platform_machine == "x86_64" and python_version < "3.13" and python_version >= "3.9"