chore(protocol): bump submodule to v1.50.4

chenghao-mou · chenghao-mou · commit 42e3760fa4f7 · 2026-07-21T18:43:29.000+01:00
diff --git a/livekit-protocol/protocol b/livekit-protocol/protocol
@@ -1 +1 @@
-Subproject commit d23ab6a396ed43b645cfa1a4a957cd5c6c165142
+Subproject commit 2172178d20d4c8d14d6873b4e9560cc38cf48c0c
