byacc: 20180510 -> 20180525 (#41304)

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

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

These checks were done:

- built on NixOS
- /nix/store/bz6434x282zsy6xz19nbd3fhzmdr4yzy-byacc-20180525/bin/yacc passed the binary check.
- 1 of 1 passed binary check by having a zero exit code.
- 0 of 1 passed binary check by having the new version present in output.
- found 20180525 with grep in /nix/store/bz6434x282zsy6xz19nbd3fhzmdr4yzy-byacc-20180525
- directory tree listing: https://gist.github.com/fffd356f1d450bf13fc3f2bf8a8f5304
- du listing: https://gist.github.com/3e8f1a51d1e20db022ff93cedc85b5a7

pkgs/development/tools/parsing/byacc/default.nix

@@ -2,14 +2,14 @@
 
 stdenv.mkDerivation rec {
   name = "byacc-${version}";
-  version = "20180510";
+  version = "20180525";
 
   src = fetchurl {
     urls = [
       "ftp://ftp.invisible-island.net/byacc/${name}.tgz"
       "https://invisible-mirror.net/archives/byacc/${name}.tgz"
     ];
-    sha256 = "14ynlrcsc2hwny3gxng19blfvglhqd4m7hl597fwksf7zfzhv56h";
+    sha256 = "1ridghk1xprxfg2k8ls87wjc00i4a7f39x2fkswfqb2wwf5qv6qj";
   };
 
   doCheck = true;