Upgrade GHC to 9.4.8

GHC 9.4.8 is now available and includes various bug fixes to the compiler https://downloads.haskell.org/~ghc/9.4.8/docs/users_guide/9.4.8-notes.html. Unfortunately, upstreamed also bumped a few bundled libraries (including base), as such we need to rebuild all Haskell dependencies for this and should therefore do the upgrade after 3.19 is released.

To upload designs, you'll need to enable LFS and have an admin enable hashed storage. More information