updatePubspecFonts method
Implementation
Future<void> updatePubspecFonts(List<dynamic> fontList) async {
final file = File(p.join(projectDir, 'pubspec.yaml'));
final content = await file.readAsString();
final editor = YamlEditor(content);
editor.update(['flutter', 'fonts'], fontList);
await file.writeAsString(editor.toString());
}