chore(deps): update helm release external-secrets to v2

manifests/artemis/external-secrets/kustomization.yaml

@@ -10,6 +10,6 @@ resources:
 helmCharts:
   - name: external-secrets
     repo: https://charts.external-secrets.io/
-    version: 2.0.1
+    version: 2.1.0
     releaseName: external-secrets
     namespace: external-secrets

manifests/artemis/mailu/kustomization.yaml

@@ -10,7 +10,7 @@ resources:
 helmCharts:
   - name: mailu
     repo: https://mailu.github.io/helm-charts/
-    version: 2.6.3
+    version: 2.1.2
     releaseName: mailu
     namespace: mailu
     valuesFile: values.yaml

manifests/artemis/mailu/values.yaml

@@ -1350,11 +1350,11 @@ postfix:
   ##     my_variable = my_value
   overrides:
     postfix.cf: |
+      inet_protocols = ipv4
+      smtp_address_preference = ipv4
       smtpd_helo_restrictions = reject_unknown_helo_hostname
       smtpd_sender_restrictions = reject_unknown_sender_domain
       smtpd_client_restrictions = permit_mynetworks
-      smtp_data_restrictions = reject_unauth_pipelining
-      smtp_relay_restrictions = permit_sasl_authenticated, reject_unauth_destination
       smtpd_relay_restrictions = permit_sasl_authenticated, reject_unauth_destination
       smtpd_recipient_restrictions = permit_sasl_authenticated, reject_unauth_destination