normaliz: migrate to flint3 (#391815)

pkgs/by-name/no/normaliz/package.nix

···
   fetchFromGitHub,
   autoreconfHook,
   gmpxx,
-  flint,
-  arb,
+  flint3,
   nauty,
 }:
 
···
 
   buildInputs = [
     gmpxx
-    flint
-    arb
+    flint3
     nauty
   ];