devel/hlint: Update to 3.8

Changelog for HLint (* = breaking change)

3.8, released 2024-01-15
    #1552, make --git and --ignore-glob work nicely together
    #1502, fix incorrect free variable calculation in some cases
    #1555, slightly more efficient concatMap usages (e.g. pull filter out)
    #1500, suggest avoiding NonEmpty.unzip (use Functor.unzip)
*  #1544, upgrade to GHC 9.8
    #1540, correct Functor law hint, was missing brackets

(pho)