Update dependency python to 3.13

Author: renovate[bot]

.github/workflows/export-notebooks.yml

@@ -41,7 +41,7 @@ jobs:
       - name: 🐍 Set up Python
         uses: actions/setup-python@v5
         with:
-          python-version: 3.12
+          python-version: 3.13
 
       - name: 📦 Install marimo
         run: |