build(deps): bump torchaudio from 2.2.2 to 2.9.1 in /main/xiaozhi-server

Bumps [torchaudio](https://github.com/pytorch/audio) from 2.2.2 to 2.9.1.
- [Release notes](https://github.com/pytorch/audio/releases)
- [Commits](https://github.com/pytorch/audio/compare/v2.2.2...v2.9.1)

---
updated-dependencies:
- dependency-name: torchaudio
  dependency-version: 2.9.1
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

main/xiaozhi-server/requirements.txt

@@ -1,7 +1,7 @@
 # -*- coding:utf-8 -*-
 #--------- 本项目推荐环境是python3.10，以下暂时不推荐升级的依赖
 torch==2.2.2
-torchaudio==2.2.2
+torchaudio==2.9.1
 numpy==1.26.4
 #--------- cozepy0.20.0要求websockets<15.0.0，以下暂时不推荐升级的依赖
 websockets==14.2