pspp: update from 0.8.2 to 0.8.3

pkgs/applications/science/math/pssp/default.nix

···
 }:
 
 stdenv.mkDerivation rec {
-  name = "pspp-0.8.2";
+  name = "pspp-0.8.3";
 
   src = fetchurl {
     url = "mirror://gnu/pspp/${name}.tar.gz";
-    sha256 = "1w7h3dglgx0jlq1wb605b8pgfsk2vr1q2q2rj7bsajh9ihbcsixr";
+    sha256 = "0vri2pzvmm38qaihfvwlry30f40lcnps4blg59ixic4q20ldxf5d";
   };
 
   buildInputs = [ libxml2 readline zlib perl cairo gtk gsl pkgconfig