fix

Author: jsstevenson

.github/workflows/checks.yaml

@@ -14,7 +14,7 @@ jobs:
       - name: Set up Python
         uses: actions/setup-python@v6
         with:
-          python-version: {{ "${{ matrix.python-version }}" }}
+          python-version: ${{ matrix.python-version }}
 
       - name: Install uv
         uses: astral-sh/setup-uv@v7