Choco: install cabal before ghc

[andreasabel]

Lifted from

• https://github.com/haskell/actions/issues/202#issuecomment-1467594951

Implementing @Mistuke's suggestion to install cabal before ghc would amount to swapping the entries in the opts record, which implicitly determines the order of installation: https://github.com/haskell/actions/blob/86bd3eda129ecad970079574dd4001961be531f8/setup/src/opts.ts#L161-L187

We could then drop again the --ignore-dependencies flag passed to choco.