build(deps): update torch requirement

Updates the requirements on [torch](https://github.com/pytorch/pytorch) to permit the latest version.

Updates `torch` to 2.7.1
- [Release notes](https://github.com/pytorch/pytorch/releases)
- [Changelog](https://github.com/pytorch/pytorch/blob/main/RELEASE.md)
- [Commits](pytorch/pytorch@v2.6.0...v2.7.1)

---
updated-dependencies:
- dependency-name: torch
  dependency-version: 2.7.1
  dependency-type: direct:production
  dependency-group: pip
...

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

Author: dependabot[bot]

pyproject.toml

@@ -28,7 +28,7 @@ jieba = "0.42.1"
 diskcache = "5.6.3"
 pillow = "10.4.0"
 filetype = "1.2.0"
-torch = "2.6.0"
+torch = "2.7.1"
 sentence-transformers = "4.0.2"
 openai = "1.72.0"
 tiktoken = "0.7.0"