Revert "[CI] Update dependency python to 3.14" (#6217)

Author: jkroepke

.github/workflows/ci.yaml

@@ -26,7 +26,7 @@ jobs:
 
       - uses: actions/setup-python@e797f83bcb11b83ae66e0230d6156d7c80228e7c # v6.0.0
         with:
-          python-version: '3.14'
+          python-version: '3.13'
 
       - name: Set up chart-testing
         uses: helm/chart-testing-action@0d28d3144d3a25ea2cc349d6e59901c4ff469b3b # v2.7.0

.github/workflows/renovate-custom-hooks.yaml

@@ -29,7 +29,7 @@ jobs:
 
       - uses: actions/setup-python@e797f83bcb11b83ae66e0230d6156d7c80228e7c # v6.0.0
         with:
-          python-version: '3.14'
+          python-version: '3.13'
 
       - name: Set up chart-testing
         uses: helm/chart-testing-action@0d28d3144d3a25ea2cc349d6e59901c4ff469b3b # v2.7.0