test(auth): fix mock

packages/wyatt_authentication_bloc/test/authentication/authentication_cubit_test.dart

@@ -67,6 +67,9 @@ void main() {
       when(() => authenticationRepository.sessionStream()).thenAnswer(
         (_) => const Stream.empty(),
       );
+      when(() => authenticationRepository.checkForCachedAccount()).thenAnswer(
+        (_) => Future<void>.value(),
+      );
     });
 
     test('initial auth state is `unknown`', () {