maintainer-list: update gpg key and email for pwnwriter (#372027)

  };

  pwnwriter = {

    name = "Nabeen Tiwaree";

    email = "hey@pwnwriter.xyz";

    keys = [ { fingerprint = "B681 763F 9B5B DF27 9A13  9E0C 0544 A89B C519 20AA"; } ];

    email = "hi@pwnwriter.me";

    keys = [ { fingerprint = "C153 DE7C 0A0D 432E F033  2B0B A524 11EC 5582 DE3A"; } ];

    github = "pwnwriter";

    githubId = 90331517;

  };