chore: update version constraint syntax

Author: O-Hannonen

json_serializable/pubspec.yaml

@@ -15,11 +15,11 @@ topics:
 resolution: workspace
 
 dependencies:
-  analyzer: '>=7.4.0 <8.0.0'
+  analyzer: ^7.4.0
   async: ^2.10.0
   build: ^2.4.1
   build_config: ^1.1.0
-  dart_style: '>=3.1.0 <4.0.0'
+  dart_style: ^3.1.0
 
   # Use a tight version constraint to ensure that a constraint on
   # `json_annotation` properly constrains all features it provides.