chore(deps): update dependency python to 3.13

Author: renovate[bot]

.github/workflows/publish-chart.yaml

@@ -29,7 +29,7 @@ jobs:
       # python is a requirement for the chart-testing action below (supports yamllint among other tests)
       - uses: actions/setup-python@v4
         with:
-          python-version: 3.7
+          python-version: 3.13
 
       - name: Set up chart-testing
         uses: helm/chart-testing-action@v2.6.1