fixed otp dart version

Author: TheNoumanDev

modules/otp_pin_field/pubspec.yaml

@@ -4,9 +4,9 @@ version: 1.2.2
 homepage: https://github.com/shivbo96/otp_pin_field
 
 environment:
-  sdk: ">=3.7.0 <4.0.0"  # Update to match your Dart version
-  flutter: ">=3.29.0"
-  
+  sdk: ">=3.5.0"
+  flutter: ">=3.24.0"
+
 dependencies:
   flutter:
     sdk: flutter