Update dependency helm to v3.21.4

Author: renovate[bot]

.github/workflows/ci-chart.yaml

@@ -23,7 +23,7 @@ jobs:
       - name: Set up Helm
         uses: azure/setup-helm@v4.3.1
         with:
-          version: v3.17.0
+          version: v3.21.4
 
       - uses: actions/setup-python@v5.6.0
         with: