Install latest version of helm via script

helm-package-push/action.yml

@@ -22,9 +22,10 @@ runs:
   using: composite
   steps:
     - name: Install Helm
-      uses: azure/setup-helm@v4
-      with:
-        version: latest
+      shell: bash
+      run: |
+        curl https://raw.githubusercontent.com/helm/helm/main/scripts/get-helm-4 | bash
+        helm version --short || { echo "[ERROR] helm not found in runner image"; exit 1; }
 
     - name: Inject image tag into chart values
       shell: bash