http-parser: 2.8.0 -> 2.8.1

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

This update was made based on information from https://repology.org/metapackage/http-parser/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.)
- directory tree listing: https://gist.github.com/e3b01495c51d0693ee8c9d07b2b46ac5

pkgs/development/libraries/http-parser/default.nix

@@ -1,13 +1,13 @@
 { stdenv, fetchurl, python2Packages, utillinux, fixDarwinDylibNames }:
 
 let
-  version = "2.8.0";
+  version = "2.8.1";
 in stdenv.mkDerivation {
   name = "http-parser-${version}";
 
   src = fetchurl {
     url = "https://github.com/joyent/http-parser/archive/v${version}.tar.gz";
-    sha256 = "17a7k3nxv2p1sp2x5d89wr51vk770753vz6qnlp2gz7nkgwwcxvj";
+    sha256 = "15ids8k2f0xhnnxh4m85w2f78pg5ndiwrpl24kyssznnp1l5yqai";
   };
 
   patches = [ ./build-shared.patch ];