如何在Flutter上更改我的同行字体？

import 'package:flutter/material.dart';

void main() {
  runApp(MaterialApp(
    home: Scaffold(
      appBar: AppBar(
        title: Text('Change Font'),
      ),
      body: Center(
        child: Text(
          'Hello World',
          style: TextStyle(
            fontSize: 24, // 字体大小
            fontFamily: 'Arial', // 字体名称
            fontWeight: FontWeight.bold, // 字体粗细
            fontStyle: FontStyle.italic, // 字体样式
            letterSpacing: 2, // 字符间距
            color: Colors.red, // 字体颜色
          ),
        ),
      ),
    ),
  ));
}

dependencies:
  flutter:
    sdk: flutter
  google_fonts: ^2.0.0

style: GoogleFonts.roboto(
  fontSize: 24,
  fontWeight: FontWeight.bold,
  color: Colors.red,
),