alert-hub(staging): update preparedness api

Author: thenav56

applications/argocd/staging/applications/alert-hub-backend.yaml

@@ -10,7 +10,7 @@ spec:
   source:
     repoURL: ghcr.io/ifrcgo
     chart: ifrcgo-alert-hub-helm
-    targetRevision: 0.1.1-develop.c8fb21af
+    targetRevision: 0.1.1-develop.ca9d3c81
     helm:
       valueFiles:
         - values-go-deploy.yaml
@@ -36,6 +36,8 @@ spec:
             AZURE_STORAGE_STATIC_CONTAINER: alert-hub-staging-static-container
             AZURE_STORAGE_ACCOUNT_NAME: ifrctgo
             AZURE_STORAGE_MANAGED_IDENTITY: "true"
+            # Temporary
+            PREPAREMESSAGES_API_DOMAIN: https://api-preparemessages-stage.ifrc.org
           serviceAccount:
             annotations:
               azure.workload.identity/client-id: "99dd63fe-721e-4abb-b30d-e2b782d2893d"