babeld: 1.8.3 -> 1.8.4

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

pkgs/tools/networking/babeld/default.nix

···
 { stdenv, fetchurl }:
 
 stdenv.mkDerivation rec {
-  name = "babeld-1.8.3";
+  name = "babeld-1.8.4";
 
   src = fetchurl {
     url = "http://www.pps.univ-paris-diderot.fr/~jch/software/files/${name}.tar.gz";
-    sha256 = "1gb6fcvi1cyl05sr9zhhasqlcbi927sbc2dns1jbnyz029lcb31n";
+    sha256 = "11wbs1x17lr7jk2578zwy3cdwc6zhxwv97nnp13z14613320s1wq";
   };
 
   preBuild = ''