[permission_handler] Update permission_handler to 12.0.1

[gin7773]

Main changes:

• Update permission_handler to 12.0.1.
• Update minimum Flutter and Dart version to 3.24 and 3.5.

Fix #1006

[gemini-code-assist]

Code Review

This pull request updates the permission_handler_tizen package, increasing the minimum Flutter and Dart SDK requirements to 3.24 and 3.5 and updating dependencies such as permission_handler and flutter_lints. Feedback indicates that the increase in minimum SDK versions should be treated as a breaking change, necessitating a minor version bump to 1.5.0 rather than a patch bump to 1.4.3, with corresponding updates needed in the changelog and README.