(maint) update version post-4.2.1 release
(maint) update version post-4.2.1 release

waynr/puppetdb,mullr/puppetdb,senior/puppetdb,rbrw/puppetdb,puppetlabs/puppetdb,rbrw/puppetdb,puppetlabs/puppetdb,rbrw/puppetdb,puppetlabs/puppetdb,mullr/puppetdb,senior/puppetdb,waynr/puppetdb,senior/puppetdb,senior/puppetdb,mullr/puppetdb,puppetlabs/puppetdb,waynr/puppetdb,mullr/puppetdb,rbrw/puppetdb,puppetlabs/puppetdb,rbrw/puppetdb,mullr/puppetdb,waynr/puppetdb