feat(clients): update client endpoints as of 2023-12-28

Author: awstools

Diff for: codegen/smithy-aws-typescript-codegen/src/main/resources/software/amazon/smithy/aws/typescript/codegen/endpoints.json

@@ -12818,6 +12818,7 @@
             "ap-south-1": {},
             "ap-southeast-1": {},
             "ap-southeast-2": {},
+            "ap-southeast-4": {},
             "ca-central-1": {},
             "eu-central-1": {},
             "eu-north-1": {},
@@ -12839,6 +12840,7 @@
             "ap-south-1": {},
             "ap-southeast-1": {},
             "ap-southeast-2": {},
+            "ap-southeast-4": {},
             "ca-central-1": {},
             "eu-central-1": {},
             "eu-north-1": {},
@@ -12860,6 +12862,7 @@
             "ap-south-1": {},
             "ap-southeast-1": {},
             "ap-southeast-2": {},
+            "ap-southeast-4": {},
             "ca-central-1": {},
             "eu-central-1": {},
             "eu-north-1": {},