unskip test that passes now (#3568)

jakemac53 · web-flow · commit 1bd7e4c4fb19 · 2023-09-01T17:14:54.000Z
Closes #3428.
diff --git a/build_config/test/errors_test.dart b/build_config/test/errors_test.dart
@@ -97,7 +97,7 @@ line 7, column 11 of build.yaml: Unsupported value for "exclude". type 'Null' is
 7 │           -
   │           ^
   ╵''');
-  }, skip: 'https://github.com/dart-lang/build/issues/3428');
+  });
 
   test('for empty exclude globs', () {
     var buildYaml = r'''
