chore(deps): update helm release mailu to v2.7.1

manifests/artemis/cnpg/kustomization.yaml

@@ -7,6 +7,6 @@ metadata:
 helmCharts:
   - name: cloudnative-pg
     repo: https://cloudnative-pg.github.io/charts
-    version: 0.28.2
+    version: 0.26.1
     releaseName: cnpg
     namespace: cnpg-system

manifests/artemis/mailu/kustomization.yaml

@@ -10,7 +10,7 @@ resources:
 helmCharts:
   - name: mailu
     repo: https://mailu.github.io/helm-charts/
-    version: 2.1.2
+    version: 2.7.1
     releaseName: mailu
     namespace: mailu
     valuesFile: values.yaml