kodiPackages.osmc-skin: 20.1.0 -> 21.1.1; unbreak (#451522)

pkgs/applications/video/kodi/addons/osmc-skin/default.nix

@@ -6,13 +6,13 @@
 buildKodiAddon rec {
   pname = "osmc-skin";
   namespace = "skin.osmc";
-  version = "20.1.0";
+  version = "21.1.1";
 
   src = fetchFromGitHub {
     owner = "osmc";
     repo = namespace;
-    rev = "v20.1.0-August-update";
-    sha256 = "E/+gC7NlVRMaymeYMBO39/+rs0blDjr2zIROr24ekzQ=";
+    tag = "v${version}-August-update";
+    hash = "sha256-3BR6HfKefuyybDv9c/ZkkZMRDyWNZWpftulXyUAD9nY=";
   };
 
   meta = with lib; {
@@ -21,7 +21,5 @@ buildKodiAddon rec {
     platforms = platforms.all;
     maintainers = [ ];
     license = licenses.cc-by-nc-sa-30;
-
-    broken = true; # no release for kodi 21
   };
 }