Release axum 0.7.8 and axum-extra 0.9.5 #5020

Job	Run time
check	1m 0s
check-docs	37s
cargo-public-api-crates (axum)	41s
cargo-hack	3m 33s
cargo-public-api-crates (axum-core)	22s
cargo-deny check (advisories)	31s
cargo-public-api-crates (axum-extra)	32s
dependencies-are-sorted	19s
cargo-deny check (bans licenses sources)	31s
Spell Check with Typos	10s
cargo-public-api-crates (axum-macros)	21s
test-versions (stable)	1m 36s
test-nightly	1m 6s
test-versions (beta)	1m 23s
armv5te-unknown-linux-musleabi	23s
test-docs	1m 28s
test-msrv	1m 56s
wasm32-unknown-unknown	26s
	16m 55s

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