Change VoiceProtocol user callbacks to be pos-only

discord/voice_client.py

@@ -115,7 +115,7 @@ class VoiceProtocol:
         self.client: Client = client
         self.channel: VocalChannel = channel
 
-    async def on_voice_state_update(self, data: GuildVoiceStatePayload) -> None:
+    async def on_voice_state_update(self, data: GuildVoiceStatePayload, /) -> None:
         """|coro|
 
         An abstract method that is called when the client's voice state
@@ -128,7 +128,7 @@ class VoiceProtocol:
         """
         raise NotImplementedError
 
-    async def on_voice_server_update(self, data: VoiceServerUpdatePayload) -> None:
+    async def on_voice_server_update(self, data: VoiceServerUpdatePayload, /) -> None:
         """|coro|
 
         An abstract method that is called when initially connecting to voice.