Switch CI to install dev dependencies via uv dependency group

Author: ndevenish

.github/workflows/python.yml

@@ -38,10 +38,11 @@ jobs:
         uses: actions/setup-python@v6
         with:
           python-version: ${{ matrix.python-version }}
+      - uses: astral-sh/setup-uv@v6
       - name: Install dependencies
         run: |
-          python -m pip install --upgrade pip
-          pip install -r requirements_dev.txt dist/*.whl
+          uv sync --group dev --no-install-project
+          uv pip install dist/*.whl
       - name: Test with pytest
         run: |
           pytest tests