Bump development ruby version
Bump development ruby version

firepoint/griddler,joeadcock/griddler,ValiMail/griddler,thoughtbot/griddler,RubyDaily/griddler,Inchdev/griddler,r38y/griddler,danavery/griddler,joeadcock/griddler,thoughtbot/griddler,RubyDaily/griddler,pipefy/griddler,wingrunr21/griddler,joeadcock/griddler,pipefy/griddler,firepoint/griddler,seanscal/griddler,firepoint/griddler,muthhus/griddler,pipefy/griddler,Inchdev/griddler,muthhus/griddler,r38y/griddler,wingrunr21/griddler,ValiMail/griddler,vahtel/griddler,danavery/griddler,wingrunr21/griddler,seanscal/griddler,r38y/griddler,thoughtbot/griddler,ValiMail/griddler,vahtel/griddler,danavery/griddler,muthhus/griddler,Inchdev/griddler,seanscal/griddler,vahtel/griddler,RubyDaily/griddler