Add dhall upper bound, #3558
Add dhall upper bound, #3558

simonmichael/stackage,mgajda/stackage,iand675/stackage,fimad/stackage,wereHamster/stackage,soenkehahn/stackage,massysett/stackage,jonschoning/stackage,mrkkrp/stackage,ethercrow/stackage,spencerjanssen/stackage,asr/stackage,fpco/stackage,stackbuilders/stackage,michalkonecny/stackage,int-index/stackage,creichert/stackage,lwm/stackage,peti/stackage,clinty/stackage,mstksg/stackage,athanclark/stackage,Daniel-Diaz/stackage,Shimuuar/stackage