Use tower-http's `TimeoutLayer` #3906

Job	Run time
check	2m 20s
cargo-hack	7m 31s
cargo-public-api-crates (axum)	49s
check-docs	26s
cargo-public-api-crates (axum-core)	33s
cargo-deny check (advisories)	39s
dependencies-are-sorted	23s
cargo-public-api-crates (axum-extra)	41s
cargo-deny check (bans licenses sources)	32s
Spell Check with Typos	5s
cargo-public-api-crates (axum-macros)	22s
test-msrv	2m 1s
test-docs	3m 39s
test-nightly	2m 53s
test-versions (stable)	4m 24s
armv5te-unknown-linux-musleabi	1m 54s
test-versions (beta)	4m 56s
wasm32-unknown-unknown	30s
	34m 38s

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