fix: update dart version in pubspec [#207]

Author: shinyford

pubspec.yaml

@@ -4,8 +4,8 @@ description: >
   Clerk SDK containing all packages that define use of Clerk 
   services for Dart and Flutter code.
 environment:
-  sdk: '>=3.0.0 <4.0.0'
-  flutter: '>=3.10.0'
+  sdk: '>=3.2.0 <4.0.0'
+  flutter: '>=3.27.4'
 
 dev_dependencies:
   melos: ^6.3.2