Update setup-python action to v6 (from v5)

Author: homeworkprod

.github/workflows/test.yml

@@ -30,7 +30,7 @@ jobs:
           cache-dependency-glob: "uv.lock"
 
       - name: Set up Python ${{ matrix.python-version }}
-        uses: actions/setup-python@v5
+        uses: actions/setup-python@v6
         with:
           python-version: ${{ matrix.python-version }}