Pushing HLS' dependency to support Cabal 3.12, so we can use multi-repl feature in HLS codebase.

[soulomoon]

Historically, HLS using experience in HLS codebase itself is not great since the lack multiple home units support. Since now Cabal 3.12 have released, and HLS also supports multi-repl feature, https://github.com/haskell/haskell-language-server/issues/4178.

We should be able to use this new feature in our own codebase. But our dependency is blocking us, some of them are: cabal-doctest entropy extensions fourmolu ghc-paths optparse-applicative ormolu pretty-simple

• [x] https://github.com/kowainik/extensions/issues/95#issuecomment-2082288700
• [x] https://github.com/haskell/entropy https://github.com/haskell/entropy/issues/84#issuecomment-2081693537
• [x] https://github.com/simonmar/ghc-paths https://github.com/simonmar/ghc-paths/issues/31
• [ ] https://github.com/cdepillabout/pretty-simple

[soulomoon]

Current workaround forcing to use the new version of the following in cabal.project

allow-newer:
  *:Cabal,
  *:Cabal-syntax,
  *:optparse-applicative

source-repository-package
    type: git
    location: https://github.com/haskell/cabal.git
    subdir: Cabal Cabal-syntax
    tag : 3.12.0+0

================ update

Also need to clone the repo optparse-applicative by your side and add the path it to cabal.project's packages