haskellPackages: mark builds failing on hydra as broken

This commit has been generated by maintainers/scripts/haskell/mark-broken.sh based on
*evaluation [1798556](https://hydra.nixos.org/eval/1798556) of nixpkgs commit [4a85282](4a85282f9a) as of 2023-08-16 14:32 UTC*
from the haskell-updates jobset on hydra under https://hydra.nixos.org/jobset/nixpkgs/haskell-updates

pkgs/development/haskell-modules/configuration-common.nix

@@ -1913,6 +1913,7 @@ self: super: {
 
       # pandoc depends on crypton-connection, which requires tls >= 1.7
       tls = self.tls_1_7_0;
+      crypton-connection = unmarkBroken super.crypton-connection;
 
       # pandoc depends on http-client-tls, which only starts depending
       # on crypton-connection in http-client-tls-0.3.6.2.