Make sure install setuptools>=78.1.0 in setup-triton (#3875)

Otherwise, some workflows (build triton with `DEBUG=1 python setup.py
bdist_wheel`) may use existed older `setuptools`, like this
[run](https://github.com/intel/intel-xpu-backend-for-triton/actions/runs/14347902219/job/40221049156#step:4:30)

---------

Co-authored-by: Pavel Chekin <[email protected]>
Co-authored-by: Liyang Ling <[email protected]>

Author: 3 people

.github/actions/setup-triton/action.yml

@@ -98,7 +98,7 @@ runs:
       shell: bash
       run: |
         cd python
-        pip install wheel pybind11
+        pip install -r requirements.txt
         ${{ inputs.command }}
 
     - name: Save Triton cache