slight ci simplification

.github/workflows/ci.yml

@@ -105,7 +105,7 @@ jobs:
         uses: actions/setup-python@v5
         with:
           python-version: '3.11'
-          architecture: ${{ matrix.python-architecture || 'x64' }}
+          architecture: x64
 
       - run: pip install -U twine 'ruff==0.1.3' typing_extensions