Update haskell.yml

Author: thma

.github/workflows/haskell.yml

@@ -15,7 +15,7 @@ jobs:
     - uses: actions/checkout@v2
     - uses: actions/setup-haskell@v1
       with:
-        ghc-version: '8.10.3'
+        ghc-version: '8.10'
         cabal-version: '3.2'
 
     - name: Cache