synapse: 0.2.99.3 -> 0.2.99.4

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

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

These checks were done:

- built on NixOS
- ran ‘/nix/store/rz2wn4lpkdqhwyz0qk7g41j2ykqmsj1b-synapse-0.2.99.4/bin/synapse -h’ got 0 exit code
- ran ‘/nix/store/rz2wn4lpkdqhwyz0qk7g41j2ykqmsj1b-synapse-0.2.99.4/bin/synapse --help’ got 0 exit code
- found 0.2.99.4 with grep in /nix/store/rz2wn4lpkdqhwyz0qk7g41j2ykqmsj1b-synapse-0.2.99.4
- directory tree listing: https://gist.github.com/77e6334e3c147a4af2d15a9878e112eb

pkgs/applications/misc/synapse/default.nix

···
 }:
 
 let
-  version = "0.2.99.3";
+  version = "0.2.99.4";
 in stdenv.mkDerivation rec {
   name = "synapse-${version}";
 
   src = fetchurl {
     url = "https://launchpad.net/synapse-project/0.3/${version}/+download/${name}.tar.xz";
-    sha256 = "0rwd42164xqfi40r13yr29cx6zy3bckgxk00y53b376nl5yqacvy";
+    sha256 = "1g6x9knb4jy1d8zgssjhzkgac583137pibisy9whjs8mckaj4k1j";
   };
 
   nativeBuildInputs = [