Third attempt at relying only on uv for Python install

Refs:
084f82d
aa683fa
d6e3da3
82626a6

.github/workflows/tests.yaml

@@ -112,16 +112,12 @@ jobs:
     continue-on-error: ${{ matrix.state == 'unstable' }}
     steps:
       - uses: actions/checkout@v4.2.2
-      - name: Set up Python ${{ matrix.python-version }}
-        uses: actions/setup-python@v5.3.0
-        with:
-          python-version: ${{ matrix.python-version }}
       - name: Install uv
         run: |
           python -m pip install -r https://raw.githubusercontent.com/kdeldycke/workflows/main/requirements/uv.txt
       - name: Install project
         run: |
-          uv --no-progress venv
+          uv --no-progress venv --python ${{ matrix.python-version }}
           uv --no-progress sync --extra test
 
       # CLI tests.