tests: fix flaky_TestConnectionHandlerOpenUpdateClose

Author: New year

pool/connection_pool_test.go

@@ -1119,7 +1119,7 @@ func TestConnectionHandlerOpenUpdateClose(t *testing.T) {
 	defer cancel()
 
 	err := test_helpers.SetClusterRO(ctx, makeDialers(poolServers), connOpts, roles)
-	require.Nilf(t, err, "fail to set roles for cluster")
+	require.NoError(t, err, "fail to set roles for cluster")
 
 	h := &testHandler{}
 	poolOpts := pool.Opts{