chore(deps): bump `rust-miniscript` to 0.12.x #343

Job	Run time
prepare	5s
Rust fmt	12s
Check no_std	26s
Build & Test (1.88.0, true, --all-features)	52s
Build & Test (1.63.0, --all-features)	37s
Build & Test (1.88.0, true, --no-default-features --features miniscript/no-std,bdk_chain/hashbrown)	52s
Build & Test (1.63.0, --no-default-features --features miniscript/no-std,bdk_chain/hashbrown)	35s
Build & Test (1.75.0, --no-default-features --features miniscript/no-std,bdk_chain/hashbrown)	51s
Build & Test Examples (example_electrum)	1m 1s
Build & Test Examples (example_esplora)	1m 3s
Build & Test Examples (example_bitcoind_rpc_polling)	44s
Check WASM	2m 31s
Rust clippy	25s
Build & Test (1.75.0, --all-features)	53s
Build & Test Examples (example_cli)	35s
	11m 42s

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