fix: vendor DAVE-compatible voice recv build

vendor/discord-ext-voice-recv/update_notes.md

@@ -0,0 +1,21 @@
+# Update notes
+Notably, not a changelog, just notes.
+
+## 0.5.2
+- Adds `extras.localplayback` module
+- Adds info about the extras modules to the readme
+- Adds `WavSink` as an alias to `WaveSink`
+- Fixed a member cleanup error in SpeechRecognitionSink
+- Changes the optional dependency format
+  - Previously it was a single optional dep, `extras`.  Now there is a dependency per module, with `extras` installing all of them.  See the readme for details.
+
+## 0.5.1
+- Fixes a build process related error
+- Changes `voice_recv.extras` import semantics
+  - The `__all__` contents of the extras modules are no longer `*` imported into `voice_recv.extras` (this was only `extras.SpeechRecognitionSink`).  You will have to access them directly, or import that specific extra module.  Example:
+    ```py
+    from discord.ext.voice_recv.extras.speechrecognition import SpeechRecognitionSink
+    # or
+    from discord.ext.voice_recv.extras import speechrecognition
+    sink = speechrecognition.SpeechRecognitionSink(...)
+    ```