haskell/actions/setup -> haskell-actions/setup

the former is deprecated

Author: TeofilC

.github/workflows/ci.yml

@@ -26,7 +26,7 @@ jobs:
       - uses: actions/checkout@v2
       - name: Set up Haskell
         id: setup-haskell-cabal
-        uses: haskell/actions/setup@v2
+        uses: haskell-actions/setup@v2
         with:
           ghc-version: ${{ matrix.ghc }}
           cabal-version: ${{ matrix.cabal }}
@@ -117,7 +117,7 @@ jobs:
       - uses: actions/checkout@v2
       - name: Set up Haskell
         id: setup-haskell-cabal
-        uses: haskell/actions/setup@v2
+        uses: haskell-actions/setup@v2
         with:
           ghc-version: ${{ matrix.ghc }}
           cabal-version: ${{ matrix.cabal }}