chore(kube): bump chart Helm release stalwart to v0.7.18

docker/home/esphome/docker-compose.yml

@@ -1,6 +1,6 @@
 services:
   esphome:
-    image: ghcr.io/esphome/esphome:2026.9.0
+    image: ghcr.io/esphome/esphome:2026.8.0
     ports:
       - "6052"
     networks:

kubernetes/infrastructure/mail/stalwart/release.yaml

@@ -14,7 +14,7 @@ spec:
         name: stalwart-helm
         namespace: stalwart
       chart: stalwart
-      version: "0.7.16"
+      version: "0.7.18"
       interval: 1m
   valuesFrom:
     - kind: Secret