build: Update matrix dart sdk to 0.23.0

lib/pages/device_settings/device_settings.dart

@@ -92,7 +92,7 @@ class DevicesSettingsController extends State<DevicesSettings> {
   }
 
   void verifyDeviceAction(Device device) async {
-    final req = Matrix.of(context)
+    final req = await Matrix.of(context)
         .client
         .userDeviceKeys[Matrix.of(context).client.userID!]!
         .deviceKeys[device.deviceId]!

pubspec.lock

@@ -1161,10 +1161,10 @@ packages:
     dependency: "direct main"
     description:
       name: matrix
-      sha256: b01a8a7141a586853a4f9b2e98b3c9912ff74bbceadc16b2bf3630bf055a830a
+      sha256: "4c94857b53674067b7aeb39723220ee7834128ffde3d54f8185c73a6784bc919"
       url: "https://pub.dev"
     source: hosted
-    version: "0.22.7"
+    version: "0.23.0"
   matrix_api_lite:
     dependency: transitive
     description:

pubspec.yaml

@@ -62,7 +62,7 @@ dependencies:
   keyboard_shortcuts: ^0.1.4
   latlong2: ^0.8.1
   linkify: ^5.0.0
-  matrix: ^0.22.6
+  matrix: ^0.23.0
   matrix_homeserver_recommendations: ^0.3.0
   native_imaging: ^0.1.0
   package_info_plus: ^4.0.0