Update guild features (#131)

Co-authored-by: github-actions[bot] <github-actions[bot]@users.noreply.github.com>

Author: github-actions[bot]

discord/types/guild.py

@@ -121,6 +121,7 @@ class UnavailableGuild(TypedDict):
     "FEATURABLE",
     "FORCE_RELAY",
     "FORWARDING_DISABLED",
+    "GAME_SERVERS",
     "GAME_SERVER_HOSTING",
     "GENSHIN_L30",
     "GUESTS_ENABLED",