fix: ios build

refer to this guide: https://forums.developer.apple.com/forums/thread/756859

pubspec.yaml

@@ -17,7 +17,7 @@ publish_to: 'none' # Remove this line if you wish to publish to pub.dev
 # https://developer.apple.com/library/archive/documentation/General/Reference/InfoPlistKeyReference/Articles/CoreFoundationKeys.html
 # In Windows, build-name is used as the major, minor, and patch parts
 # of the product and file versions while build-number is used as the build suffix.
-version: 2.4.0+60
+version: 2.4.0+61
 
 environment:
   sdk: '>=3.1.0 <4.0.0'