Migrate to haskell-actions/setup

Backport of b639528 from #9463

Author: andreabedini

.github/workflows/validate.yml

@@ -53,7 +53,7 @@ jobs:
 
       - uses: actions/checkout@v2
 
-      - uses: haskell/actions/setup@v1
+      - uses: haskell-actions/setup@v2
         id: setup-haskell
         with:
           ghc-version: ${{ matrix.ghc }}
@@ -208,10 +208,12 @@ jobs:
           apt-get update
           apt-get install -y ghc-${{ matrix.extra-ghc }}-dyn
 
-      - uses: haskell/actions/setup@v1
+      - uses: haskell-actions/setup@v2
         id: setup-haskell
         with:
           ghc-version: ${{ matrix.ghc }}
+          # Make sure this bindist works in this old environment
+          cabal-install: 3.10.1.0
 
       # As we are reusing the cached build dir from the previous step
       # the generated artifacts are available here,
@@ -256,7 +258,7 @@ jobs:
     steps:
       - uses: actions/checkout@v2
 
-      - uses: haskell/actions/setup@v1
+      - uses: haskell-actions/setup@v2
         id: setup-haskell
         with:
           ghc-version: ${{ matrix.ghc }}