fixup multiple backend failure

Author: benzekrimaha

tests/functional/aws-node-sdk/test/multipleBackend/utils.js

@@ -14,7 +14,7 @@ const { v4: uuidv4 } = require('uuid');
 
 const azure = require('@azure/storage-blob');
 
-const { GCP } = storage.data.external;
+const { GCP } = storage.data.external.GCP;
 
 const { getRealAwsConfig } = require('../support/awsConfig');
 const { config } = require('../../../../../lib/Config');