Fix WeakSubscribe parameter type

src/CommunityToolkit/Xamarin.CommunityToolkit/ObjectModel/Extensions/INotifyPropertyChangedExtension.shared.cs

@@ -5,7 +5,7 @@ namespace Xamarin.CommunityToolkit.ObjectModel.Extensions
 {
 	public static class INotifyPropertyChangedExtension
 	{
-		public static void WeakSubscribe<T>(this INotifyPropertyChanged target, T subscriber, Action<T, object, EventArgs> action)
+		public static void WeakSubscribe<T>(this INotifyPropertyChanged target, T subscriber, Action<T, object, PropertyChangedEventArgs> action)
 		{
 			_ = target ?? throw new ArgumentNullException(nameof(target));
 			if (subscriber == null || action == null)