提交：锁定版本；

pubspec.yaml

@@ -23,7 +23,7 @@ dependencies:
   # 日志打印 https://pub.dev/packages/logger
   logger: ^1.1.0
   # toast https://pub.dev/packages/fluttertoast
-  fluttertoast: ^8.0.9
+  fluttertoast: 8.0.9
   # webview https://pub.dev/packages/webview_flutter
   flutter_html: ^2.2.1
   # 包信息 https://pub.dev/packages/package_info_plus