docs: Update Admin API docs for v26.1.9

Author: vbotbuildovich

admin/admin-v2.yaml

@@ -2511,9 +2511,9 @@ info:
   title: Redpanda Admin API
   version: v2.0.0
   x-admin-api-major: v2.0.0
-  x-generated-at: 2026-03-19T03:09:31.752Z
+  x-generated-at: 2026-05-22T12:41:56.148Z
   x-generator: redpanda-docs-openapi-bundler
-  x-redpanda-core-version: v26.1.1-rc2
+  x-redpanda-core-version: v26.1.9
 openapi: 3.1.0
 paths:
   /redpanda.core.admin.v2.BrokerService/GetBroker: