Update dependency python to 3.14

Author: renovate[bot]

.github/workflows/integration.yml

@@ -30,7 +30,7 @@ jobs:
           fetch-depth: 0
       - uses: actions/setup-python@v5
         with:
-          python-version: '3.9'
+          python-version: '3.14'
       - uses: ./.github/actions/setup-step-ca
       - uses: roots/setup-trellis-cli@v1
         with: