Bump tungstenite from 0.20.0 to 0.20.1 (#931)

Bumps [tungstenite](https://github.com/snapview/tungstenite-rs) from 0.20.0 to 0.20.1.
- [Changelog](https://github.com/snapview/tungstenite-rs/blob/master/CHANGELOG.md)
- [Commits](snapview/tungstenite-rs@v0.20.0...v0.20.1)

---
updated-dependencies:
- dependency-name: tungstenite
  dependency-type: indirect
...

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