chore(deps): update actions/setup-python action to v6

Author: renovate[bot]

.github/workflows/lint_test_charts.yaml

@@ -28,7 +28,7 @@ jobs:
         with:
           fetch-depth: 0
 
-      - uses: actions/setup-python@v5
+      - uses: actions/setup-python@v6
       - uses: helm/chart-testing-action@v2.8.0
       - uses: azure/setup-helm@v4
         with:
@@ -73,7 +73,7 @@ jobs:
         with:
           fetch-depth: 0
 
-      - uses: actions/setup-python@v5
+      - uses: actions/setup-python@v6
       - uses: helm/chart-testing-action@v2.8.0
       - uses: azure/setup-helm@v4
         with: