Add upper bound for unliftio-core, #5218
Add upper bound for unliftio-core, #5218

michalkonecny/stackage,jonschoning/stackage,massysett/stackage,clinty/stackage,soenkehahn/stackage,fpco/stackage,athanclark/stackage,mrkkrp/stackage,asr/stackage,simonmichael/stackage,iand675/stackage,stackbuilders/stackage,Daniel-Diaz/stackage