Allow groundhog-th to build with LTS 13
Allow groundhog-th to build with LTS 13

groundhog-th-0.10.2 now uses yaml version 0.11 - https://hackage.haskell.org/package/groundhog-th-0.10.2 - which was the reason for it being removed from LTS 13 - https://github.com/lykahb/groundhog/issues/84

I don't need groundhog-inspector so have not tried to see if this can also be added back.
massysett/stackage,soenkehahn/stackage,int-index/stackage,Daniel-Diaz/stackage,spencerjanssen/stackage,asr/stackage,simonmichael/stackage,mstksg/stackage,fimad/stackage,stackbuilders/stackage,athanclark/stackage,jonschoning/stackage,peti/stackage,iand675/stackage,ethercrow/stackage,mrkkrp/stackage,fpco/stackage,clinty/stackage,michalkonecny/stackage,wereHamster/stackage