Bump actions/setup-python from 5 to 6 (#2674)

Author: dependabot[bot]

.github/workflows/python-package.yml

@@ -54,7 +54,7 @@ jobs:
     steps:
       - uses: actions/checkout@v5
       - name: Set up Python ${{ matrix.python }}
-        uses: actions/setup-python@v5
+        uses: actions/setup-python@v6
         with:
           python-version: ${{ matrix.python }}
           cache: pip