byacc: 20170709 -> 20180510 (#40499)

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
- 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 20180510 with grep in /nix/store/z8i5f145zpz750hvcbjlncy8kqak8zv2-byacc-20180510
- directory tree listing: https://gist.github.com/328d2b1900cfb911e7567cabf95d80c3
- du listing: https://gist.github.com/cc161fe31193017387ae25b64829aaf2

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

@@ -2,14 +2,14 @@
 
 stdenv.mkDerivation rec {
   name = "byacc-${version}";
-  version = "20170709";
+  version = "20180510";
 
   src = fetchurl {
     urls = [
       "ftp://ftp.invisible-island.net/byacc/${name}.tgz"
       "https://invisible-mirror.net/archives/byacc/${name}.tgz"
     ];
-    sha256 = "1syrg1nwh2qmlr5mh7c4vz9psdv4gf55h8i5ffw84q6whlcq1kr7";
+    sha256 = "14ynlrcsc2hwny3gxng19blfvglhqd4m7hl597fwksf7zfzhv56h";
   };
 
   doCheck = true;