cctz: 2.2 -> 2.3

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

pkgs/development/libraries/cctz/default.nix

@@ -2,13 +2,13 @@
 
 stdenv.mkDerivation rec {
   name = "cctz-${version}";
-  version = "2.2";
+  version = "2.3";
 
   src = fetchFromGitHub {
     owner = "google";
     repo = "cctz";
     rev = "v${version}";
-    sha256 = "0liiqz1swfc019rzfaa9y5kavs2hwabs2vnwbn9jfczhyxy34y89";
+    sha256 = "0254xfwscfkjc3fbvx6qgifr3pwkc2rb03z8pbvvqy098di9alhr";
   };
 
   makeFlags = [ "PREFIX=$(out)" ];