Fix package validation issues

* Please consider renaming LICENSE.md to `LICENSE`. See https://dart.dev/tools/pub/publishing#important-files.
* Your pubspec.yaml includes an "author" section which is no longer used and may be removed.

Author: AliAbdelfattah

LICENSE.md renamed to LICENSE

@@ -7,7 +7,6 @@ description: >-
   your user's device including all console logs, server-side network requests 
   and bug reproduction steps compiling all these details in one organised dashboard
   to help you debug and fix bugs faster.
-author: Instabug <support@instabug.com>
 homepage: https://github.com/Instabug/Instabug-Flutter#readme
 documentation: https://github.com/Instabug/Instabug-Flutter#readme