mate.libmatemixer: 1.20.0 -> 1.20.1

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

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

These checks were done:

- built on NixOS

- 0 of 0 passed binary check by having a zero exit code.
- 0 of 0 passed binary check by having the new version present in output.
- found 1.20.1 with grep in /nix/store/11ay5byrlalp3z70d2nn3byf9i99m12p-libmatemixer-1.20.1
- directory tree listing: https://gist.github.com/6de4fa8f22cf5e05683ba4f03784a1f0
- du listing: https://gist.github.com/f63fa290542df670f00cabe5c6a7c5ca

pkgs/desktops/mate/libmatemixer/default.nix

@@ -6,11 +6,11 @@
 
 stdenv.mkDerivation rec {
   name = "libmatemixer-${version}";
-  version = "1.20.0";
+  version = "1.20.1";
 
   src = fetchurl {
     url = "http://pub.mate-desktop.org/releases/${mate.getRelease version}/${name}.tar.xz";
-    sha256 = "0jpfaqbspn2mjv6ysgzdmzhb07gx61yiiiwmrw94qymld2igrzb5";
+    sha256 = "00p67mi0flsbgn15qpwq60rzf917s5islbmhirbvz6npcvv0d493";
   };
 
   nativeBuildInputs = [ pkgconfig intltool ];