Gracefully handle accept errors in `serve` #4142

Job	Run time
cargo-hack	2m 59s
check-docs	17s
cargo-public-api-crates (axum)	31s
check	40s
cargo-public-api-crates (axum-core)	23s
cargo-deny check (advisories)	26s
cargo-public-api-crates (axum-extra)	27s
cargo-deny check (bans licenses sources)	26s
cargo-public-api-crates (axum-macros)	15s
dependencies-are-sorted	13s
Spell Check with Typos	7s
test-msrv	1m 55s
test-docs	1m 42s
armv5te-unknown-linux-musleabi	26s
test-nightly	1m 45s
test-versions (stable)	2m 3s
wasm32-unknown-unknown	18s
test-versions (beta)	1m 47s
	16m 40s

Provide feedback