Update charted to 0.4.8 and roll

packages/intl/test/date_time_format_file_even_test.dart

Index: packages/intl/test/date_time_format_file_even_test.dart
diff --git a/packages/intl/test/date_time_format_file_even_test.dart b/packages/intl/test/date_time_format_file_even_test.dart
index b6f82024b3e582a2756a3f26022a2d62506ec9ef..1ff0fcf1b134d9a628a28fa501b53f1bb6420304 100644
--- a/packages/intl/test/date_time_format_file_even_test.dart
+++ b/packages/intl/test/date_time_format_file_even_test.dart
@@ -2,20 +2,18 @@
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
-/**
- * Tests date formatting and parsing using locale data read from the
- * local file system. This tests one half the locales, since testing all
- * of them takes long enough that it may cause timeouts in the test bots.
- */
+/// Tests date formatting and parsing using locale data read from the
+/// local file system. This tests one half the locales, since testing all
+/// of them takes long enough that it may cause timeouts in the test bots.
 
+@Timeout(const Duration(seconds: 60))
 library date_time_format_file_test_2;
 
 import 'date_time_format_test_stub.dart';
 import 'data_directory.dart';
 import 'package:intl/date_symbol_data_file.dart';
-import 'package:unittest/unittest.dart';
+import 'package:test/test.dart';
 
 main() {
-  unittestConfiguration.timeout = new Duration(seconds: 60);
   runWith(evenLocales, dataDirectory, initializeDateFormatting);
 }