update(versions): update pins with a declared source (web-app-stalwart)

roles/web-app-stalwart/meta/services.yml

@@ -42,7 +42,7 @@ stalwart:
   # nocheck: default-placement-manager  mail edge at a known IP: MX A-record, PTR and SPF bind to the stack host IP (a floating task's egress IP breaks deliverability); the mail store is NFS-hostile and IS the app — same rationale as web-app-mailu
   placement: manager
   image: stalwartlabs/stalwart
-  webui_version: "v2.0.4"
+  webui_version: "v2.0.5"
   version: "v1.0.3"
   update:
     key: webui_version