haskell.packages.ghc{96,98}.cabal-install: fix build of 3.12

With cabal-install >= 3.12, we need to adjust our cabal-install overlay
once again.

- Due to the new dependency semaphore-compat, which appears to require
  unix >= 2.8 it is very difficult to get to work for GHC < 9.6 (but
  probably possible). Technically, using pkgs.cabal-install should
  always be fine, so there's no strict need for cabal-install to work
  with every GHC. Let's drop support for GHC < 9.6 for now.

- Make sure that cabal-install-solver also uses the latest version
  always.

- Due to Cabal 3.12, we need to deviate from Stackage for
  hackage-security. cabal-install does support the standard version of
  resolv now, though.

maintainers/scripts/haskell/update-stackage.sh

@@ -63,6 +63,7 @@ sed -r \
     -e '/ language-nix /d' \
     -e '/ hackage-db /d' \
     -e '/ cabal-install /d' \
+    -e '/ cabal-install-solver /d' \
     -e '/ lsp /d' \
     -e '/ lsp-types /d' \
     -e '/ lsp-test /d' \