feat: update AWS service endpoints metadata

Author: aws-sdk-kotlin-ci

codegen/aws-sdk-codegen/src/main/resources/aws/sdk/kotlin/codegen/endpoints.json

@@ -11120,6 +11120,7 @@
           "ap-southeast-2" : { },
           "ap-southeast-3" : { },
           "ap-southeast-4" : { },
+          "ap-southeast-5" : { },
           "ca-central-1" : { },
           "ca-west-1" : { },
           "eu-central-1" : { },