ethtool: 4.18 -> 4.19 (#50117)

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

pkgs/tools/misc/ethtool/default.nix

···
 
 stdenv.mkDerivation rec {
   name = "ethtool-${version}";
-  version = "4.18";
+  version = "4.19";
 
   src = fetchurl {
     url = "mirror://kernel/software/network/ethtool/${name}.tar.xz";
-    sha256 = "0461nwqp1z9a89nmxf7kq0r4jfl9c7fg55c71lfmc5y0siaqb54h";
+    sha256 = "1j6hyr809af2m3gqm11hdfwks5kljqy1ikspq3d9rhj29qv6r2mi";
   };
 
   meta = with stdenv.lib; {