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

@@ -3087,6 +3087,7 @@
           "ca-central-1" : { },
           "eu-central-1" : { },
           "eu-north-1" : { },
+          "eu-south-1" : { },
           "eu-west-1" : { },
           "eu-west-2" : { },
           "eu-west-3" : { },
@@ -10022,6 +10023,7 @@
           "ap-south-1" : { },
           "ap-southeast-1" : { },
           "ap-southeast-2" : { },
+          "ap-southeast-3" : { },
           "ca-central-1" : {
             "variants" : [ {
               "hostname" : "network-firewall-fips.ca-central-1.amazonaws.com",
@@ -11624,6 +11626,7 @@
       },
       "resource-explorer-2" : {
         "defaults" : {
+          "dnsSuffix" : "api.aws",
           "variants" : [ {
             "dnsSuffix" : "api.aws",
             "hostname" : "{service}-fips.{region}.{dnsSuffix}",
@@ -16717,6 +16720,7 @@
       },
       "resource-explorer-2" : {
         "defaults" : {
+          "dnsSuffix" : "api.amazonwebservices.com.cn",
           "variants" : [ {
             "dnsSuffix" : "api.amazonwebservices.com.cn",
             "hostname" : "{service}-fips.{region}.{dnsSuffix}",
@@ -19785,6 +19789,7 @@
       },
       "resource-explorer-2" : {
         "defaults" : {
+          "dnsSuffix" : "api.aws",
           "variants" : [ {
             "dnsSuffix" : "api.aws",
             "hostname" : "{service}-fips.{region}.{dnsSuffix}",