Use haskell-actions/setup, not the deprecated haskell/actions/setup

Author: RyanGlScott

.github/workflows/ci.yaml

@@ -29,7 +29,7 @@ jobs:
         with:
           submodules: true
 
-      - uses: haskell/actions/setup@v1
+      - uses: haskell-actions/setup@v2
         id: setup-haskell
         with:
           ghc-version: ${{ matrix.ghc-version }}