[4 / 5] Make approval-voting runnable on a worker thread #583

Job	Run time
set-image	9s
cargo-check-benches (master)	25m 36s
cargo-check-benches (current)	29m 0s
cargo-check-each-crate (1)	15m 2s
test-frame-ui	31m 10s
cargo-check-each-crate (2)	17m 38s
cargo-check-each-crate (3)	4m 52s
test-full-crypto-feature	2m 28s
test-node-metrics	10m 22s
cargo-check-each-crate (4)	13m 52s
cargo-check-each-crate (5)	21m 0s
cargo-check-each-crate (6)	13m 32s
cargo-check-each-crate (7)	27m 38s
test-frame-examples-compile-to-wasm	2m 55s
test-deterministic-wasm	6m 22s
check-tracing	2m 10s
check-metadata-hash	5m 47s
cargo-hfuzz	2m 49s
node-bench-regression-guard	13s
All test misc tests passed	1s
	3h 52m 36s

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