fixed infinite loop. (#786)

Co-authored-by: Dustin Hickey <hickeydh@amazon.amazon.com>

Author: hickeydh-aws

src/lib/custom-resources/cdk-guardduty-admin-setup/runtime/src/index.ts

@@ -248,6 +248,7 @@ async function listMembers(detectorId: string): Promise<AWS.GuardDuty.Member[]>
       guardduty
         .listMembers({
           DetectorId: detectorId,
+          NextToken: token,
         })
         .promise(),
     );