Bump ruby2ruby from 2.4.1 to 2.4.2 (#154)
Bump ruby2ruby from 2.4.1 to 2.4.2 (#154)

Bumps [ruby2ruby](https://github.com/seattlerb/ruby2ruby) from 2.4.1 to 2.4.2.
- [Release notes](https://github.com/seattlerb/ruby2ruby/releases)
- [Changelog](https://github.com/seattlerb/ruby2ruby/blob/master/History.rdoc)
- [Commits](https://github.com/seattlerb/ruby2ruby/commits)

Signed-off-by: dependabot[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@dependabot.com>
peter50216/pwntools-ruby,peter50216/pwntools-ruby,peter50216/pwntools-ruby,peter50216/pwntools-ruby