Bump triton from 3.3.0 to 3.4.0

Bumps [triton](https://github.com/triton-lang/triton) from 3.3.0 to 3.4.0.
- [Release notes](https://github.com/triton-lang/triton/releases)
- [Changelog](https://github.com/triton-lang/triton/blob/main/RELEASE.md)
- [Commits](triton-lang/triton@v3.3.0...v3.4.0)

---
updated-dependencies:
- dependency-name: triton
  dependency-version: 3.4.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

backend/requirements.txt

@@ -30,7 +30,7 @@ uvicorn[standard]==0.34.3
 xformers==0.0.30
 # flash_attn==2.7.3; sys_platform == 'linux'
 triton-windows==3.3.1.post19; sys_platform == 'win32'
-triton==3.3.0; sys_platform == 'linux'
+triton==3.4.0; sys_platform == 'linux'
 
 #  ——— Linux wheels ———
 nunchaku @ https://huggingface.co/mit-han-lab/nunchaku/resolve/main/nunchaku-0.3.0+torch2.7-cp310-cp310-linux_x86_64.whl; sys_platform == "linux" and python_version == "3.10"