support for `hiedb` 0.5.* in `ghcide`

[peterbecich]

Is your enhancement request related to a problem? Please describe.

Current upper bound is < 0.4.5
https://github.com/haskell/haskell-language-server/blob/master/ghcide/ghcide.cabal#L81

Describe the solution you'd like

Support for latest hiedb 0.5.*
https://hackage.haskell.org/package/hiedb

This would make it easier to build with the latest NixPkgs:

$ nix search nixpkgs/haskell-updates#haskellPackages hiedb   
* legacyPackages.x86_64-linux.haskellPackages.hiedb (0.5.0.0)
  Generates a references DB from .hie files

Describe alternatives you've considered

Additional context