Update docker.io/postgres Docker tag to v18

clusters/cl01tl/helm/stack/templates/application-set.yaml

@@ -29,6 +29,8 @@ spec:
         repoURL: http://gitea-http.gitea:3000/alexlebens/infrastructure
         targetRevision: manifests
         path: '{{ `{{path}}` }}'
+        helm:
+          releaseName: '{{ `{{path.basename}}` }}'
       destination:
         name: in-cluster
         namespace: '{{ `{{path.basename}}` }}'