pubsub: skip TestIntegration_UpdateSubscription_ExpirationPolicy

Updates #1702

Change-Id: I17b43516380740f5b18dfc78cf0db18b9879cf85
Reviewed-on: https://code-review.googlesource.com/c/gocloud/+/49430
Reviewed-by: Jean de Klerk <deklerk@google.com>
diff --git a/pubsub/integration_test.go b/pubsub/integration_test.go
index e8be01c..a6254a3 100644
--- a/pubsub/integration_test.go
+++ b/pubsub/integration_test.go
@@ -655,6 +655,7 @@
 }
 
 func TestIntegration_UpdateSubscription_ExpirationPolicy(t *testing.T) {
+	t.Skip("https://github.com/googleapis/google-cloud-go/issues/1702")
 	ctx := context.Background()
 	client := integrationTestClient(ctx, t)
 	defer client.Close()