Fix releasing dart packages (#1117)

+# Note
+
+Before publishing a new version, please first run
+```
+flutter analyze
+```
+to check if there are any issues.

 // Copyright (c)  2024  Xiaomi Corporation
 import 'dart:convert';
 import 'dart:ffi';
-import 'dart:typed_data';
 
 import 'package:ffi/ffi.dart';
 

@@ -46,6 +46,9 @@ dependencies:
   # sherpa_onnx_ios:
     # path: ../sherpa_onnx_ios
 
+dev_dependencies:
+  flutter_lints: ^3.0.0
+
 flutter:
   plugin:
     platforms: