conf: updates version code

Author: am-casper

pubspec.yaml

@@ -4,7 +4,7 @@ description: A new Flutter project.
 # pub.dev using `flutter pub publish`. This is preferred for private packages.
 publish_to: 'none' # Remove this line if you wish to publish to pub.dev
 
-version: 3.0.5+30
+version: 3.0.6+31
 
 environment:
   sdk: '>=3.0.0 <4.0.0'