Upgrade to permission_handler_platform_interface 3.1.3

permission_handler/CHANGELOG.md

+## 6.1.3
+
+* Implement equality operator on the `Permission` class;
+* Updated the README.md with instructions on enabling/ disabling the bluetooth permissions on iOS;
+* Corrected some spelling mistakes in the `CHANGELOG.md`.
+
 ## 6.1.2
 
 * Correctly handle the ACCESS_MEDIA_LOCATION and ACCESS_ACTIVITY_RECOGNITION permissions on pre Android Q devices (permissions should be implicitly granted on pre Android Q). 

permission_handler/pubspec.yaml

 name: permission_handler
 description: Permission plugin for Flutter. This plugin provides a cross-platform (iOS, Android) API to request and check permissions.
-version: 6.1.2
+version: 6.1.3
 homepage: https://github.com/baseflowit/flutter-permission-handler
 
 flutter:
@@ -16,7 +16,7 @@ dependencies:
   flutter:
     sdk: flutter
   meta: ^1.3.0
-  permission_handler_platform_interface: ^3.1.1
+  permission_handler_platform_interface: ^3.1.3
 
 dev_dependencies:
   flutter_test: