message: Use System::println() instead of std::cout
diff: @@ -13,10 +13,7 @@ namespace vcpkg::Commands::PortsDiff
  for (const std::string& name : ports_to_print)
  {
  const std::string& version = names_and_versions.at(name);
  - std::cout << std::left
  - << std::setw(20) << name << ' '
  - << std::setw(16) << version << ' '
  - << '\n';
  + System::println("%-20s %-16s", name, version);
  }
  }
  @@ -28,10 +25,7 @@ namespace vcpkg::Commands::PortsDiff
  {
  const std::string& previous_version = previous_names_and_versions.at(name);
  const std::string& current_version = current_names_and_versions.at(name);
  - std::cout << std::left
  - << std::setw(20) << name << ' '
  - << std::setw(16) << previous_version << " -> " << current_version
  - << '\n';
  + System::println("%-20s %-16s -> %s", name, previous_version, current_version);
  }
  }
  