gsimplecal: 2.4.1 -> 2.5.1

pkgs/applications/misc/gsimplecal/default.nix

···
 
 stdenv.mkDerivation rec {
   pname = "gsimplecal";
-  version = "2.4.1";
+  version = "2.5.1";
 
   src = fetchFromGitHub {
     owner = "dmedvinsky";
     repo = "gsimplecal";
     rev = "v${version}";
-    sha256 = "sha256-8faYw8tg8pOkpImcv8TM4UUpQEEtDKjAk4iKbXDC9no=";
+    sha256 = "sha256-Q8vK+rIRr+Tzwq0Xw5a1pYoLkSwF6PEdqc3/Dk01++o=";
   };
 
   postPatch = ''