Bumps [nokogiri](https://github.com/sparklemotion/nokogiri) from 1.6.6.2 to 1.10.4.
- [Release notes](https://github.com/sparklemotion/nokogiri/releases)
- [Changelog](https://github.com/sparklemotion/nokogiri/blob/master/CHANGELOG.md)
- [Commits](https://github.com/sparklemotion/nokogiri/compare/v1.6.6.2...v1.10.4)
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