ci: update audit.yml workflow to use actions-rust-lang/audit #1347

Job	Run time
Check WASM	31s
Build and test (stable, true, --no-default-features --features miniscript/no-std)	1m 25s
prepare	3s
Build and test (stable, true, --all-features)	3m 52s
Build and test (1.63.0, --no-default-features --features miniscript/no-std)	2m 19s
Check no_std	9s
Build and test (1.63.0, --all-features)	5m 3s
Build & Test Examples (example_cli)	10s
Rust fmt	4s
Build & Test Examples (example_bitcoind_rpc_polling)	25s
Build & Test Examples (example_electrum)	46s
Build & Test Examples (example_esplora)	50s
Build & Test Examples (example_wallet_electrum)	46s
Build & Test Examples (example_wallet_esplora_async)	54s
Build & Test Examples (example_wallet_esplora_blocking)	48s
Build & Test Examples (example_wallet_rpc)	25s
clippy_check	33s
	19m 3s

Provide feedback