follow the license change of jruby from CPL to EPL

some distribution forms of jruby includes this jar and others like ```org.jruby:jruby``` artifact has this jnr-posix as dependency. the current situation is inconsistent and some license tools complain about it.

a new release of this artifact would allow to "overwrite" the dep of ```org.jruby:jruby``` and remove the red flag of this license tool ;)