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

@@ -473,6 +473,15 @@
           "us-west-2" : { }
         }
       },
+      "aoss" : {
+        "endpoints" : {
+          "ap-northeast-1" : { },
+          "eu-west-1" : { },
+          "us-east-1" : { },
+          "us-east-2" : { },
+          "us-west-2" : { }
+        }
+      },
       "api.detective" : {
         "defaults" : {
           "protocols" : [ "https" ]