breaking: update tokio-tungstenite to 0.26 and update examples #5122

Job	Run time
check	1m 38s
cargo-hack	4m 31s
check-docs	19s
cargo-public-api-crates (axum)	33s
cargo-deny check (advisories)	24s
cargo-public-api-crates (axum-core)	21s
cargo-deny check (bans licenses sources)	25s
dependencies-are-sorted	14s
cargo-public-api-crates (axum-extra)	38s
cargo-public-api-crates (axum-macros)	19s
Spell Check with Typos	7s
test-msrv	2m 35s
test-versions (stable)	3m 6s
test-docs	1m 40s
armv5te-unknown-linux-musleabi	42s
test-versions (beta)	2m 59s
test-nightly	1m 40s
wasm32-unknown-unknown	21s
	22m 32s

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