Test change to gcn_conv_test.py

Tests PR merge workflow.

tensorflow_gnn/models/gcn/gcn_conv_test.py

@@ -261,7 +261,7 @@ def test_full_model_heterogeneous(self):
                     sizes=tf.constant([2, 1]),
                     adjacency=tfgnn.Adjacency.from_indices(
                         ('paper', tf.constant([0, 0, 1])),
-                        ('author', tf.constant([1, 0, 2])),
+                        ('author', tf.constant([1, 0, 3])),
                     )),
         },
     )