Update tokio-tungstenite 0.20 #3765

Job	Run time
check	3m 23s
check-docs	26s
cargo-hack	8m 31s
cargo-public-api-crates (axum)	1m 30s
cargo-public-api-crates (axum-core)	1m 7s
cargo-public-api-crates (axum-extra)	1m 27s
cargo-public-api-crates (axum-macros)	1m 5s
cargo-deny check (advisories)	1m 45s
cargo-deny check (bans licenses sources)	1m 29s
dependencies-are-sorted	1m 23s
test-nightly	4m 26s
test-msrv	8m 9s
test-docs	3m 51s
armv5te-unknown-linux-musleabi	1m 31s
test-versions (stable)	4m 14s
test-versions (beta)	6m 3s
wasm32-unknown-unknown	37s
	50m 57s

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