GHC 9.6.6 enters [extra-testing]

Hi all, The GHC 9.6.x updates have now entered [extra-testing]. This time, four packages have been retired, so please remove them manually if you have them installed: - haskell-configfile - haskell-monad-gen - haskell-monad-journal - haskell-success Again a special thanks to @Vekhir for helping me in preparing many batches of updates, including this one. Please let me know if you encounter any issues. Otherwise, the batch will be moved to [extra] in a few days. -- Regards, Felix Yan