[haskell] Upgrade haskell to 9.2

It seems it compiles without problems with a simple change in
nix/pkgs.nix file.

nix/pkgs.nix

@@ -2,7 +2,7 @@
 
 rec {
   inherit pkgs;
-  ghc = pkgs.haskell.compiler.ghc8107;
+  ghc = pkgs.haskell.compiler.ghc922;
   igraph_0_10_4 = pkgs.igraph.overrideAttrs (finalAttrs: previousAttrs: {
     version = "0.10.4";