Update dependency helm to v3.21.3

Author: renovate[bot]

.github/workflows/go-test-yamlmapper.yaml

@@ -34,7 +34,7 @@ jobs:
       - name: Set up Helm
         uses: azure/setup-helm@fe7b79cd5ee1e45176fcad797de68ecaf3ca4814 # v4.2.0
         with:
-          version: v3.17.2
+          version: v3.21.3
       - name: Add Datadog Helm repo
         run: helm repo add datadog https://helm.datadoghq.com && helm repo update
       - name: Add Prometheus Community Helm repo