Bump actions/setup-python from 5 to 6 (#248)

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.github/workflows/deploy-11ty-pages.yml

@@ -16,7 +16,7 @@ jobs:
       - uses: actions/checkout@v4
 
       - name: Set up Python
-        uses: actions/setup-python@v5
+        uses: actions/setup-python@v6
 
       - name: Install dependencies
         run: |