feat: update AWS service endpoints metadata

Author: aws-sdk-kotlin-ci

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

@@ -18186,6 +18186,11 @@
           }
         }
       },
+      "partnercentral-channel" : {
+        "endpoints" : {
+          "us-east-1" : { }
+        }
+      },
       "personalize" : {
         "endpoints" : {
           "ap-northeast-1" : { },