Change some logs to debug

Logs about binding response with unknown transaction id may happen
pretty ofthen if the other side duplicates connectivity check responses,
hence moved to debug.

Similarly, logs about sending data in unexpected state may be triggered
by transitioning to the failed state and the fact that controlling
process haven't processed this notification yet.

Author: mickel8

lib/ex_ice/priv/ice_agent.ex

@@ -435,7 +435,7 @@ defmodule ExICE.Priv.ICEAgent do
   end
 
   def send_data(%__MODULE__{state: state} = ice_agent, _data) do
-    Logger.warning("""
+    Logger.debug("""
     Cannot send data in ICE state: #{inspect(state)}. \
     Data can only be sent in state :connected or :completed. Ignoring.\
     """)
@@ -1295,7 +1295,7 @@ defmodule ExICE.Priv.ICEAgent do
         handle_keepalive_response(ice_agent, local_cand, src_ip, src_port, msg)
 
       %Type{class: class, method: :binding} when is_response(class) ->
-        Logger.warning("""
+        Logger.debug("""
         Ignoring binding response with unknown t_id: #{msg.transaction_id}.
         Is it retransmission or we called ICE restart?
         """)