Update dependency python to 3.13

Signed-off-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

.github/workflows/headerchecker.yml

@@ -19,7 +19,7 @@ jobs:
 
       - uses: actions/setup-python@v4
         with:
-          python-version: '3.9'
+          python-version: '3.13'
 
       - id: files
         uses: jitterbit/get-changed-files@v1

.github/workflows/test-chart.yaml

@@ -21,7 +21,7 @@ jobs:
       - name: Setup Python
         uses: actions/setup-python@v4
         with:
-          python-version: 3.7
+          python-version: 3.13
 
       - name: Setup chart-testing
         uses: helm/[email protected]