Rust

Fix and test sr25519 signing in nostd #5552

Job	Run time
Check unused dependencies	40s
Cargo fmt	15s
Cargo clippy (WASM)	1m 59s
Cargo check	5m 38s
Cargo clippy	3m 13s
Check documentation and run doc tests	4m 40s
Cargo check (WASM)	1m 19s
Test (no_std)	1m 56s
Test (Native)	26m 42s
Test chainhead backend	19m 14s
Test (Light Client)	4m 24s
Test (WASM)	12m 42s
	1h 22m 42s

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