chore(ios): 固定 shared_preferences_foundation 2.5.6

pubspec.yaml

@@ -62,6 +62,10 @@ dev_dependencies:
   shared_preferences_platform_interface: ^2.4.2
   flutter_launcher_icons: ^0.14.4
 
+# Xcode 16.2 / Swift 6.0.3 cannot parse the trailing comma in foundation 2.6.0.
+dependency_overrides:
+  shared_preferences_foundation: 2.5.6
+
 # For information on the generic Dart part of this file, see the
 # following page: https://dart.dev/tools/pub/pubspec