Update endpoints model

Author: aws-sdk-swift-automation

codegen/sdk-codegen/sdk-endpoints.json

@@ -20276,11 +20276,13 @@
           "ap-east-2" : { },
           "ap-northeast-1" : { },
           "ap-northeast-2" : { },
+          "ap-northeast-3" : { },
           "ap-south-1" : { },
           "ap-south-2" : { },
           "ap-southeast-1" : { },
           "ap-southeast-2" : { },
           "ap-southeast-3" : { },
+          "ap-southeast-5" : { },
           "ap-southeast-7" : { },
           "ca-central-1" : {
             "variants" : [ {