pubsub: prefer the word allowlist (#2427)

diff --git a/pubsub/integration_test.go b/pubsub/integration_test.go
index 7b9257d..8ba54db 100644
--- a/pubsub/integration_test.go
+++ b/pubsub/integration_test.go
@@ -735,7 +735,7 @@
 }
 
 // NOTE: This test should be skipped by open source contributors. It requires
-// whitelisting, a (gsuite) organization project, and specific permissions.
+// allowlisting, a (gsuite) organization project, and specific permissions.
 func TestIntegration_UpdateTopicLabels(t *testing.T) {
 	t.Parallel()
 	ctx := context.Background()