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

@@ -5729,6 +5729,7 @@
               "tags" : [ "dualstack" ]
             } ]
           },
+          "ap-southeast-7" : { },
           "ca-central-1" : {
             "variants" : [ {
               "hostname" : "cognito-identity.ca-central-1.amazonaws.com",
@@ -5966,6 +5967,7 @@
               "tags" : [ "dualstack" ]
             } ]
           },
+          "ap-southeast-7" : { },
           "ca-central-1" : {
             "variants" : [ {
               "hostname" : "cognito-idp.ca-central-1.amazonaws.com",