fix: update xdg_desktop_portal package, override doesn't work

Author: Merrit

flutter_local_notifications_linux/pubspec.yaml

@@ -9,15 +9,12 @@ dependencies:
     sdk: flutter
   flutter_local_notifications_platform_interface: ^7.0.0
   path: ^1.8.0
-  xdg_desktop_portal: ^0.1.12
-  xdg_directories: ">=0.2.0+1 <2.0.0"
-
-dependency_overrides:
   # Temporarily use a fork of xdg_desktop_portal to support the ActionInvoked signal
   xdg_desktop_portal:
     git:
       url: https://github.com/Merrit/xdg_desktop_portal.dart.git
       ref: 8d18d560ba3388627c998011a0803defc0e84c30
+  xdg_directories: ">=0.2.0+1 <2.0.0"
 
 dev_dependencies:
   build_runner: ^2.3.3