Upgrade to ghc 9.10

[jhrcek]

Trying to make things work with GHC 9.10, for the purpose of including stylish-haskell in haskell language server (haskell/haskell-language-server#4233)

[jhrcek]

Status update: this is functionally complete, but waiting for ghc 9.10 to become available in stackage snapshot so I can upgrade stack ci config

[jhrcek]

Hello @jaspervdj
could you please check this PR?
The only thing missing I think is updating stack CI config to use ghc 9.10 based resolver.
But in in stackage I see stylish-haskell has been disabled because it doesn't support ghc 9.10 (see commercialhaskell/stackage#7414), so it seems like a bit of a chicken-egg problem.
Would it make sense to you to 1) disable stack ci temporarily and then 2) release new version of stylish-haskell with 9.10 support to hackage so we could enable it with ghc 9.10 in hls?

[jaspervdj]

Thanks!

[jaspervdj]

I am addressing the broken CI here: #484

IMO we should not switch the stack CI over to use the newest GHC version (yet), as long as it's covered by cabal we're good. This avoids the chicken-and-egg problem.

[jhrcek]

Sounds great. Feel free to merge your PR and I'll rebase this PR on top, removing CI changes from this one.

[jhrcek]

FYI removing 9.4 from CI, because its associated base 4.17 is out of bounds for ghc-lib-parser, which requires base >= 4.18.