chore(deps): update dependency helm to v3.21.3

Author: renovate[bot]

.github/workflows/push_pr.yaml

@@ -46,7 +46,7 @@ jobs:
       - uses: helm/chart-testing-action@v2.8.0
       - uses: azure/setup-helm@v5
         with:
-          version: v3.21.2 #Do NOT update to v4 until https://github.com/helm-unittest/helm-unittest/issues/777 is resolved
+          version: v3.21.3 #Do NOT update to v4 until https://github.com/helm-unittest/helm-unittest/issues/777 is resolved
 
       - name: Lint charts
         run: ct --config .github/ct.yaml lint --debug