feat(validators): bumped up intl_utils version

Author: danvick

packages/form_builder_validators/pubspec.yaml

@@ -18,7 +18,7 @@ dev_dependencies:
   flutter_lints: ^1.0.4
   flutter_test:
     sdk: flutter
-  intl_utils: ^2.6.0
+  intl_utils: ^2.6.1
 
 flutter_intl:
   enabled: true