Added dependencies in build.yaml to allow building
diff --git a/grpc.def b/grpc.def
index 30d60b0..1022e5b 100644
--- a/grpc.def
+++ b/grpc.def
@@ -67,6 +67,7 @@
     grpc_channel_ping
     grpc_channel_register_call
     grpc_channel_create_registered_call
+    grpc_call_arena_alloc
     grpc_call_start_batch
     grpc_call_get_peer
     grpc_call_set_load_reporting_cost_context