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

@@ -18780,6 +18780,7 @@
               "tags" : [ "dualstack" ]
             } ]
           },
+          "eu-central-2" : { },
           "eu-north-1" : {
             "variants" : [ {
               "hostname" : "polly.eu-north-1.api.aws",