Update Redis Enterprise API specification (redis#3319)

Co-authored-by: redis-enterprise-doc-sync[bot] <246451900+redis-enterprise-doc-sync[bot]@users.noreply.github.com>

Author: redis-enterprise-doc-sync[bot]

content/operate/rs/references/rest-api/api-reference/openapi.json

@@ -2158,7 +2158,8 @@
           "Cluster"
         ],
         "x-publish-docs": true,
-        "x-stability-level": "stable"
+        "x-stability-level": "stable",
+        "x-timeout-seconds": 900
       }
     },
     "/v1/cluster/certificates/rotate": {
@@ -2454,7 +2455,8 @@
           "Cluster"
         ],
         "x-publish-docs": true,
-        "x-stability-level": "stable"
+        "x-stability-level": "stable",
+        "x-timeout-seconds": 900
       }
     },
     "/v1/ldap_mappings": {