librsync: 2.1.0 -> 2.2.1

Semi-automatic update generated by
https://github.com/ryantm/nixpkgs-update tools. This update was made
based on information from
https://repology.org/metapackage/librsync/versions

pkgs/development/libraries/librsync/default.nix

@@ -2,13 +2,13 @@
 
 stdenv.mkDerivation rec {
   pname = "librsync";
-  version = "2.1.0";
+  version = "2.2.1";
 
   src = fetchFromGitHub {
     owner = "librsync";
     repo = "librsync";
     rev = "v${version}";
-    sha256 = "03ncx7a2zd93b3jaq7b62nwn8qcwmf04jfvljnpxj5wsxl2agkp7";
+    sha256 = "08wdlxsa9zg2pyasz1lwg70d5psi4amv81v4yxwffx67ndzb9yp5";
   };
 
   nativeBuildInputs = [ cmake ];