feat: update AWS service endpoints metadata

Author: aws-sdk-kotlin-ci

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

@@ -15321,6 +15321,7 @@
           "ap-southeast-3" : { },
           "ap-southeast-4" : { },
           "ap-southeast-5" : { },
+          "ap-southeast-7" : { },
           "ca-central-1" : { },
           "ca-west-1" : { },
           "eu-central-1" : { },
@@ -15362,6 +15363,7 @@
           "il-central-1" : { },
           "me-central-1" : { },
           "me-south-1" : { },
+          "mx-central-1" : { },
           "sa-east-1" : { },
           "us-east-1" : {
             "variants" : [ {