Update endpoints model

Author: aws-sdk-swift-automation

codegen/sdk-codegen/sdk-endpoints.json

@@ -39032,6 +39032,11 @@
           "eu-isoe-west-1" : { }
         }
       },
+      "apigateway" : {
+        "endpoints" : {
+          "eu-isoe-west-1" : { }
+        }
+      },
       "appconfig" : {
         "endpoints" : {
           "eu-isoe-west-1" : { }