fix versions

Author: jperezrealini

typehelpers/json_serializable_type_helper_utils/CHANGELOG.md

@@ -1,13 +1,10 @@
-## 6.1.0
+## 6.0.0
 
+- Dart 3 support
 - Update json_serializable to ^6.9.4
 - Update analyzer to ^7.3.0
 - Update source_gen to ^2.0.0
 
-## 6.0.0
-
-- Dart 3 support
-
 ## 5.1.2
 
 - **CHORE**: update dependencies

typehelpers/json_serializable_type_helper_utils/pubspec.yaml

@@ -1,6 +1,6 @@
 name: json_serializable_type_helper_utils
 description: Helper package for adding TypeHelpers to json_serializable. Can be used to add support for container types like collections.
-version: 6.1.0
+version: 6.0.0
 homepage: https://github.com/knaeckeKami/json_serializable_immutable_collections/tree/master/
 
 environment: