Fixes all tests by using "qqq" rather than "zip" as an invalid suffix

The "zip" suffix was added to the list without the tests being updated. This fixes that by using "qqq" rather than "zip". All tests pass locally when using:

```
bundle exec rake
```

I noticed the failures when putting together https://github.com/weppos/publicsuffix-ruby/pull/49 so it might be best to merge this PR first.