atom-beta: 1.21.0-beta0 -> 1.22.0-beta0

pkgs/applications/editors/atom/beta.nix

···
 { stdenv, pkgs, fetchurl, lib, makeWrapper, gvfs, atomEnv}:
 
 stdenv.mkDerivation rec {
-  name = "atom-${version}";
-  version = "1.21.0-beta0";
+  name = "atom-beta-${version}";
+  version = "1.22.0-beta0";
 
   src = fetchurl {
     url = "https://github.com/atom/atom/releases/download/v${version}/atom-amd64.deb";
-    sha256 = "1syxlyb62vp9hmjdiazhmvq8w52b90l8mvf502xkdav4vi3yxzfz";
+    sha256 = "0xsj0vvaxjw60gg6niaws2lf9lkrh1sz7ypk41g6l4hdgmqyg6fi";
     name = "${name}.deb";
   };