fix(deps): update rust crate tokio-tungstenite to 0.21.0 - autoclosed

[renovate[bot]]

This PR contains the following updates:

Package	Type	Update	Change
tokio-tungstenite	dependencies	minor	0.19.0 -> 0.21.0

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Release Notes

snapview/tokio-tungstenite (tokio-tungstenite)

### [`v0.21.0`](https://togithub.com/snapview/tokio-tungstenite/blob/HEAD/CHANGELOG.md#0210) [Compare Source](https://togithub.com/snapview/tokio-tungstenite/compare/v0.20.1...v0.21.0) - Update TLS dependencies. - Update `tungstenite` to `0.21.0`. ### [`v0.20.1`](https://togithub.com/snapview/tokio-tungstenite/blob/HEAD/CHANGELOG.md#0201) [Compare Source](https://togithub.com/snapview/tokio-tungstenite/compare/v0.20.0...v0.20.1) - Fix RUSTSEC-2023-0053. - Fix transitive CVE-2023-43669 from `tungstenite`. ### [`v0.20.0`](https://togithub.com/snapview/tokio-tungstenite/blob/HEAD/CHANGELOG.md#0200) [Compare Source](https://togithub.com/snapview/tokio-tungstenite/compare/v0.19.0...v0.20.0) - Change the buffering behavior for `Sink::send()` and `Sink::feed()`, [see `tungstenite`'s changelog for more details](https://togithub.com/snapview/tungstenite-rs/blob/master/CHANGELOG.md#0200).

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