maintainers/team-list: update marketing team to current standing (#445406)

Changed files
+4
maintainers
+4
maintainers/team-list.nix
···
marketing = {
members = [
+
djacu
+
flyfloh
+
thilobillerbeck
tomberek
];
+
githubTeams = [ "marketing-team" ];
scope = "Marketing of Nix/NixOS/nixpkgs.";
shortName = "Marketing";
enableFeatureFreezePing = true;