fix log level in executer (ydb-platform#2920)

Author: gridnevvvit

ydb/core/kqp/executer_actor/kqp_executer_impl.h

@@ -359,7 +359,7 @@ class TKqpExecuterBase : public TActorBootstrapped<TDerived> {
         ui64 seqNo = ev->Get()->Record.GetSeqNo();
         i64 freeSpace = ev->Get()->Record.GetFreeSpace();
 
-        LOG_ERROR_S(*NActors::TlsActivationContext, NKikimrServices::KQP_EXECUTER, "TxId: " << TxId
+        LOG_DEBUG_S(*NActors::TlsActivationContext, NKikimrServices::KQP_EXECUTER, "TxId: " << TxId
             << ", send ack to channelId: " << channelId
             << ", seqNo: " << seqNo
             << ", enough: " << ev->Get()->Record.GetEnough()