gsl: 2.4 -> 2.5

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

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

These checks were done:

- built on NixOS
- /nix/store/cams8w74kvh5b7bx2jykap5yh469qzap-gsl-2.5/bin/gsl-randist passed the binary check.
- /nix/store/cams8w74kvh5b7bx2jykap5yh469qzap-gsl-2.5/bin/gsl-histogram passed the binary check.
- /nix/store/cams8w74kvh5b7bx2jykap5yh469qzap-gsl-2.5/bin/gsl-config passed the binary check.
- 3 of 3 passed binary check by having a zero exit code.
- 1 of 3 passed binary check by having the new version present in output.
- found 2.5 with grep in /nix/store/cams8w74kvh5b7bx2jykap5yh469qzap-gsl-2.5
- directory tree listing: https://gist.github.com/70df8117b02b4102425b4cd0219498cb
- du listing: https://gist.github.com/67a7925931ba8738deb32c46fbf5d919

pkgs/development/libraries/gsl/default.nix

@@ -1,11 +1,11 @@
 { fetchurl, fetchpatch, stdenv }:
 
 stdenv.mkDerivation rec {
-  name = "gsl-2.4";
+  name = "gsl-2.5";
 
   src = fetchurl {
     url = "mirror://gnu/gsl/${name}.tar.gz";
-    sha256 = "16yfs5n444s03np1naj6yp1fsysd42kdscxzkg0k2yvfjixx0ijd";
+    sha256 = "1395y9hlhqadn5g9j8q22224fds5sd92jxi9czfavjj24myasq04";
   };
 
   patches = [