libisofs: 1.5.2 -> 1.5.4

pkgs/development/libraries/libisofs/default.nix

···
 
 stdenv.mkDerivation rec {
   pname = "libisofs";
-  version = "1.5.2";
+  version = "1.5.4";
 
   src = fetchurl {
     url = "http://files.libburnia-project.org/releases/${pname}-${version}.tar.gz";
-    sha256 = "002mcyqwg625a8hqvsrmgm26mhhfwj0j7rahfhsqirmk02b16npg";
+    sha256 = "sha256-qqDtgKdQGXkxb1BbCwF/Kcug6lRjt1EUO60sNgIVqI4=";
   };
 
   buildInputs = [ attr zlib ];