weston: 3.0.0 -> 4.0.0

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

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

These checks were done:

- built on NixOS
- ran ‘/nix/store/0354z3f09fdz91z0gypm630mwyyw9m6d-weston-4.0.0/bin/weston -h’ got 0 exit code
- ran ‘/nix/store/0354z3f09fdz91z0gypm630mwyyw9m6d-weston-4.0.0/bin/weston --help’ got 0 exit code
- ran ‘/nix/store/0354z3f09fdz91z0gypm630mwyyw9m6d-weston-4.0.0/bin/weston --version’ and found version 4.0.0
- ran ‘/nix/store/0354z3f09fdz91z0gypm630mwyyw9m6d-weston-4.0.0/bin/wcap-decode --help’ got 0 exit code
- found 4.0.0 with grep in /nix/store/0354z3f09fdz91z0gypm630mwyyw9m6d-weston-4.0.0
- directory tree listing: https://gist.github.com/01f9658faac9a7816ccf1ca44d11fe15

pkgs/applications/window-managers/weston/default.nix

@@ -7,11 +7,11 @@
 
 stdenv.mkDerivation rec {
   name = "weston-${version}";
-  version = "3.0.0";
+  version = "4.0.0";
 
   src = fetchurl {
     url = "http://wayland.freedesktop.org/releases/${name}.tar.xz";
-    sha256 = "19936zlkb75xcaidd8fag4ah8000wrh2ziqy7nxkq36pimgdbqfd";
+    sha256 = "0n2big8xw6g6n46zm1jyf00dv9r4d84visdz5b8vxpw3xzkhmz50";
   };
 
   nativeBuildInputs = [ pkgconfig ];