Update audioop-lts requirement from ~=0.2.0 to ~=0.2.1 (#257)

Updates the requirements on [audioop-lts](https://github.com/AbstractUmbra/audioop) to permit the latest version.
- [Commits](AbstractUmbra/audioop@0.2.0...0.2.1)

---
updated-dependencies:
- dependency-name: audioop-lts
  dependency-type: direct:production
...

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requirements.txt

@@ -1,4 +1,4 @@
-audioop-lts~=0.2.0
+audioop-lts~=0.2.1
 discord.py~=2.4.0
 emoji~=2.14.0
 pymongo~=4.10.1