Rust

Tweak test to look at holds, not locks after polkadot-sdk@f5673cf (#1… #5526

Job	Run time
Check unused dependencies	39s
Cargo fmt	15s
Cargo check	5m 40s
Check documentation and run doc tests	4m 38s
Cargo clippy	3m 13s
Cargo check (WASM)	1m 23s
Cargo clippy (WASM)	1m 3s
Test (no_std)	1m 58s
Test (Light Client)	3m 23s
Test (Native)	6m 44s
Test (WASM)	6m 59s
Test chainhead backend	6m 43s
	42m 38s

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