adds api-report file to pull request

Signed-off-by: Brian Fletcher <brian@roadie.io>

plugins/kubernetes-backend/api-report.md

@@ -16,6 +16,8 @@ import { Logger as Logger_2 } from 'winston';
 export interface AWSClusterDetails extends ClusterDetails {
   // (undocumented)
   assumeRole?: string;
+  // (undocumented)
+  externalId?: string;
 }
 
 // Warning: (ae-missing-release-tag) "ClusterDetails" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)