haskell-github-types: test suite tries to access the network

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

···
   concurrent-dns-cache = dontCheck super.concurrent-dns-cache;
   dbus = dontCheck super.dbus;                          # http://hydra.cryp.to/build/498404/log/raw
   digitalocean-kzs = dontCheck super.digitalocean-kzs;  # https://github.com/KazumaSATO/digitalocean-kzs/issues/1
+  github-types = dontCheck super.github-types;          # http://hydra.cryp.to/build/1114046/nixlog/1/raw
   hadoop-rpc = dontCheck super.hadoop-rpc;              # http://hydra.cryp.to/build/527461/nixlog/2/raw
   hasql = dontCheck super.hasql;                        # http://hydra.cryp.to/build/502489/nixlog/4/raw
   hjsonschema = overrideCabal super.hjsonschema (drv: { testTarget = "local"; });