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

@@ -17890,6 +17890,7 @@
             },
             "hostname" : "oidc.ap-southeast-5.amazonaws.com"
           },
+          "ap-southeast-7" : { },
           "ca-central-1" : {
             "credentialScope" : {
               "region" : "ca-central-1"
@@ -17968,6 +17969,7 @@
             },
             "hostname" : "oidc.me-south-1.amazonaws.com"
           },
+          "mx-central-1" : { },
           "sa-east-1" : {
             "credentialScope" : {
               "region" : "sa-east-1"