maintainers: add despsyched to the deshaw team

maintainers/team-list.nix

@@ -326,6 +326,7 @@ with lib.maintainers;
     # Verify additions to this team with at least one already existing member of the team.
     members = [
       de11n
+      despsyched
       invokes-su
     ];
     scope = "Group registration for D. E. Shaw employees who collectively maintain packages.";