use correct ghc version

MaximilianAlgehed · MaximilianAlgehed · commit 1224e7e71f0e · 2025-10-10T08:34:35.000+02:00
diff --git a/.github/workflows/haskell-ci.yml b/.github/workflows/haskell-ci.yml
@@ -60,6 +60,7 @@ jobs:
       with:
         enable-stack: true
         stack-version: latest
+        ghc-version: 9.10.3
 
     - name: Cache
       id: cache
