message: Explicitly specify `duckdb` namespace
  For `unique_ptr`
  Cf.
diff: @@ -180,7 +180,7 @@ struct StatementParam {
  };
  struct RunPreparedTask : public Task {
  - RunPreparedTask(Statement &statement_, unique_ptr<StatementParam> params_, RunType run_type_)
  + RunPreparedTask(Statement &statement_, duckdb::unique_ptr<StatementParam> params_, RunType run_type_)
  : Task(statement_, params_->callback), params(move(params_)), run_type(run_type_) {
  }
  @@ -271,11 +271,11 @@ struct RunPreparedTask : public Task {
  }
  }
  std::unique_ptr<duckdb::QueryResult> result;
  - unique_ptr<StatementParam> params;
  + duckdb::unique_ptr<StatementParam> params;
  RunType run_type;
  };
  -unique_ptr<StatementParam> Statement::HandleArgs(const Napi::CallbackInfo &info) {
  +duckdb::unique_ptr<StatementParam> Statement::HandleArgs(const Napi::CallbackInfo &info) {
  size_t start_idx = ignore_first_param ? 1 : 0;
  auto params = duckdb::make_unique<StatementParam>();
  