fix url for helm image dependency

.gitlab-ci.yml

@@ -2,7 +2,7 @@ default:
   tags:
     - docker-host-linux
   image:
-    name: "${CI_REGISTRY}/maps/cicd-images/helm:latest"
+    name: "${CI_REGISTRY_IMAGE}/helm:latest"
 
 variables:
   NAMESPACE: "shibboleth-sp-helm-chart"