symbolizer looks flutter engine in moved directory

[emakar]

dart_ci/github-label-notifier/symbolizer/lib/symbolizer.dart

Line 97 in ff8580f

.getCommit(RepositorySlug('flutter', 'engine'), engineHash);

      // Try to expand short hash into full hash.
      final engineCommit = await github.repositories
          .getCommit(RepositorySlug('flutter', 'engine'), engineHash);
      engineHash = engineCommit.sha;

symbolizer looks flutter/engine, but engine was moved to flutter/flutter