Update dependencies

[erikd]

Add ghc-9.14 to the CI build matix.

[RyanGlScott]

Ah, recent versions of haskell-ci are more strict about unused dependencies. I've pushed #61, which should address this. Can you rebase your changes on top of master?

[erikd]

This time for sure!

[erikd]

@RyanGlScott In some other repos I just added:

          if [ $((HCNUMVER >= 91400)) -ne 0 ] ; then echo "allow-newer: *:*" >> cabal.project ; fi

No need for HEADHACKAGE.

[RyanGlScott]

My goal is to have the haskell-ci.yml file be completely auto-generated, with no manual edits required. The head-hackage option is a quick way to achieve this, so I think I'll go with this for the time being. (This is temporary anyway, since we'll want to remove this one all of discrimination's dependencies support GHC 9.14.)