ci: swap deprecated haskell/actions/setup for haskell-actions/setup

+ Also don't setup stack

Author: rasheedja

.github/workflows/haskell.yml

@@ -32,11 +32,10 @@ jobs:
       - uses: actions/checkout@v3
 
       - name: Set up GHC ${{ matrix.ghc-version }}
-        uses: haskell/actions/setup@v2
+        uses: haskell-actions/setup@v2
         id: setup
         with:
           ghc-version: ${{ matrix.ghc-version }}
-          enable-stack: true
 
       - name: Installed minor versions of GHC, Cabal, and Stack
         shell: bash