fix(openapi): update kafka-mgmt/v1 OpenAPI document (#167)

Co-authored-by: app-services-ci <app-services-ci@users.noreply.github.com>

Author: app-services-ci

.openapi/kas-fleet-manager.yaml

@@ -58,7 +58,9 @@ paths:
 
   /api/kafkas_mgmt/v1/status:
     get:
+      deprecated: true
       operationId: getServiceStatus
+      description: "[DEPRECATED] The service capacity status is now reported per cloud provider region and Kafka instance type in the /api/kafkas_mgmt/v1/cloud_providers/{id}/regions endpoint. Please use this endpoint instead."
       responses:
         "200":
           content: