xscreensaver: 5.38 -> 5.39

Semi-automatic update generated by https://github.com/ryantm/nixpkgs-update tools.

This update was made based on information from https://repology.org/metapackage/xscreensaver/versions.

These checks were done:

- built on NixOS
- Warning: no binary found that responded to help or version flags. (This warning appears even if the package isn't expected to have binaries.)
- found 5.39 with grep in /nix/store/gbzmzb9nq2frp4q1mmz2946gzcx536v3-xscreensaver-5.39
- directory tree listing: https://gist.github.com/aa36e0385c0160a833c83693ce83be28

pkgs/misc/screensavers/xscreensaver/default.nix

@@ -5,12 +5,12 @@
 }:
 
 stdenv.mkDerivation rec {
-  version = "5.38";
+  version = "5.39";
   name = "xscreensaver-${version}";
 
   src = fetchurl {
     url = "https://www.jwz.org/xscreensaver/${name}.tar.gz";
-    sha256 = "1f58h5rgjbxr4hh40m6zkpkzbzg68l7nqzjwal0b17yysafbmsf6";
+    sha256 = "09i47h4hdgwxyqgrsnshl4l5dv5mrsp37h705cc22lwby601ikj8";
   };
 
   buildInputs =