GHC 9.6.6

[amesgen]

https://discourse.haskell.org/t/ghc-9-6-6-is-now-available/9852

Would be great to get as it includes https://gitlab.haskell.org/ghc/ghc/-/merge_requests/12162 which is necessary for cabal's multi-repl support in projects with a lot of dependencies.

[hamishmack]

Added in #2225