Update endpoints model

Author: AWS SDK for Go v2 automation user

codegen/smithy-aws-go-codegen/src/main/resources/software/amazon/smithy/aws/go/codegen/endpoints.json

@@ -405,6 +405,11 @@
           }
         }
       },
+      "agreement-marketplace" : {
+        "endpoints" : {
+          "us-east-1" : { }
+        }
+      },
       "airflow" : {
         "endpoints" : {
           "ap-northeast-1" : { },
@@ -20019,6 +20024,11 @@
           "cn-northwest-1" : { }
         }
       },
+      "redshift-serverless" : {
+        "endpoints" : {
+          "cn-north-1" : { }
+        }
+      },
       "resource-explorer-2" : {
         "defaults" : {
           "dnsSuffix" : "api.amazonwebservices.com.cn",