Add HLDM server 72.34.103.90:27015

[FragUPlenty]

I added my server Disco_Wookie DM to the master server

[github-actions]

Server list PR validation

Probed 1 new entry.

Gamedir	Address	Claimed	Responder	Host	Notes
valve	72.34.103.90:27015	49 (Xash)	49 (Xash)	Disco_Wookie DM	✅ protocol match.

---

_{Probes can be flaky on the first try; the nightly publish workflow re-probes with a 48 h grace window, so a single ❌ here is not necessarily fatal. Re-push to re-run.}