ci: Regenerate haskell-ci

Author: github-actions[bot]

.github/workflows/haskell-ci.yml

@@ -192,7 +192,7 @@ jobs:
           chmod a+x $HOME/.cabal/bin/cabal-plan
           cabal-plan --version
       - name: checkout
-        uses: actions/checkout@v5
+        uses: actions/checkout@v4
         with:
           path: source
       - name: autoreconf