fix lint

Author: stevensJourney

demos/supabase-todolist/lib/powersync.dart

@@ -173,7 +173,7 @@ Future<void> openDatabase() async {
     currentConnector = SupabaseConnector();
     db.connect(
         connector: currentConnector,
-        options: SyncOptions(
+        options: const SyncOptions(
             syncImplementation: SyncClientImplementation.rust,
             appMetadata: {'app_version': '1.0.1'}));
   }

packages/powersync_core/test/sync/stream_test.dart

@@ -280,6 +280,7 @@ void main() {
 
   test('passes app metadata to the server (legacy sync client)', () async {
     options = SyncOptions(
+      // ignore: deprecated_member_use
       syncImplementation: SyncClientImplementation.dart,
       appMetadata: {'foo': 'bar'},
     );