message: Missing 403 code for Apple Sign In (lib)
diff: @@ -213,6 +213,9 @@ bool IsAuthenticationError(const error &err) {
  if (err.find(kUnauthorizedError) != std::string::npos) {
  return true;
  }
  + if (err.find(kForbiddenError) != std::string::npos) {
  + return true;
  + }
  return false;
  }
  