ecosystem: Add spring-rs (#2877) #4709

Job	Run time
cargo-hack	4m 2s
check	1m 12s
check-docs	30s
cargo-public-api-crates (axum)	30s
cargo-deny check (advisories)	27s
cargo-public-api-crates (axum-core)	18s
cargo-deny check (bans licenses sources)	25s
dependencies-are-sorted	17s
Spell Check with Typos	5s
cargo-public-api-crates (axum-extra)	30s
cargo-public-api-crates (axum-macros)	16s
test-msrv	5m 35s
test-nightly	2m 10s
armv5te-unknown-linux-musleabi	44s
test-docs	1m 41s
test-versions (stable)	2m 35s
wasm32-unknown-unknown	15s
test-versions (beta)	1m 44s
	23m 16s

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