ginac: 1.8.6 -> 1.8.7

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

···
 
 stdenv.mkDerivation rec {
   pname = "ginac";
-  version = "1.8.6";
+  version = "1.8.7";
 
   src = fetchurl {
     url = "https://www.ginac.de/ginac-${version}.tar.bz2";
-    sha256 = "sha256-ALMgsRFsrlt7QzZNv/t5EkcdFx9ITYJ2RgXXFYWNl1s=";
+    sha256 = "sha256-cf9PLYoA5vB86P7mm3bcweu7cnvmdgtYfB+7XM97Yeo=";
   };
 
   propagatedBuildInputs = [ cln ];