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

@@ -1699,6 +1699,7 @@
           "ap-south-1" : { },
           "ap-southeast-1" : { },
           "ap-southeast-2" : { },
+          "ap-southeast-3" : { },
           "ca-central-1" : { },
           "eu-central-1" : { },
           "eu-north-1" : { },
@@ -8737,6 +8738,12 @@
             },
             "hostname" : "oidc.ap-northeast-2.amazonaws.com"
           },
+          "ap-northeast-3" : {
+            "credentialScope" : {
+              "region" : "ap-northeast-3"
+            },
+            "hostname" : "oidc.ap-northeast-3.amazonaws.com"
+          },
           "ap-south-1" : {
             "credentialScope" : {
               "region" : "ap-south-1"