cppzmq: 4.3.0 -> 4.4.1

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

pkgs/development/libraries/cppzmq/default.nix

@@ -2,13 +2,13 @@
 
 stdenv.mkDerivation rec {
   name = "cppzmq-${version}";
-  version = "4.3.0";
+  version = "4.4.1";
 
   src = fetchFromGitHub {
     owner = "zeromq";
     repo = "cppzmq";
     rev = "v${version}";
-    sha256 = "1g45cdny1m08zw4l261bqcqfdb825mnwjwqcf35bkyc03fr4213l";
+    sha256 = "15dgkv51csfkafplf0n0vqbjdr4pxqxq44dln0dcizhsn1p0a57q";
   };
 
   nativeBuildInputs = [ cmake ];