breaking: update tokio-tungstenite to 0.26 and update examples #5120

Job	Run time
check-docs	15s
cargo-hack	4m 24s
check	1m 27s
cargo-public-api-crates (axum)	32s
cargo-public-api-crates (axum-core)	18s
cargo-deny check (advisories)	24s
dependencies-are-sorted	14s
Spell Check with Typos	5s
cargo-deny check (bans licenses sources)	25s
cargo-public-api-crates (axum-extra)	26s
cargo-public-api-crates (axum-macros)	18s
test-docs	0s
armv5te-unknown-linux-musleabi	0s
test-nightly	0s
test-msrv	0s
test-versions	0s
wasm32-unknown-unknown	0s
	8m 48s

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