Update docker.io/postgres Docker tag to v18

clusters/cl01tl/storage/backrest/templates/service.yaml

@@ -1,14 +0,0 @@
-apiVersion: v1
-kind: Service
-metadata:
-  name: garage-ps10rp
-  namespace: {{ .Release.Namespace }}
-  labels:
-    app.kubernetes.io/name: garage-ps10rp
-    app.kubernetes.io/instance: {{ .Release.Name }}
-    app.kubernetes.io/part-of: {{ .Release.Name }}
-  annotations:
-    tailscale.com/tailnet-fqdn: garage-ps10rp.boreal-beaufort.ts.net
-spec:
-  externalName: placeholder
-  type: ExternalName