breaking: update tokio-tungstenite to 0.26 and update examples #5111

Job	Run time
cargo-hack	4m 6s
check	1m 23s
check-docs	15s
cargo-public-api-crates (axum)	29s
cargo-deny check (advisories)	26s
cargo-public-api-crates (axum-core)	16s
cargo-deny check (bans licenses sources)	24s
dependencies-are-sorted	18s
cargo-public-api-crates (axum-extra)	28s
Spell Check with Typos	3s
cargo-public-api-crates (axum-macros)	22s
test-msrv	0s
test-versions	0s
test-nightly	0s
armv5te-unknown-linux-musleabi	0s
test-docs	0s
wasm32-unknown-unknown	0s
	8m 30s

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