ci: run cabal update

Author: rasheedja

.github/workflows/haskell.yml

@@ -50,6 +50,7 @@ jobs:
 
       - name: Configure the build
         run: |
+          cabal update
           cabal configure --enable-tests --enable-benchmarks --disable-documentation
           cabal build --dry-run
           # stack build --test --bench --no-haddock --dry-run