Merge bitcoindevkit/bdk#1623: fix!(wallet): `ChangeSet` should not be… #1337

Job	Run time
Build & Test Examples (example_cli)	37s
Check no_std	2m 52s
Build & Test Examples (example_bitcoind_rpc_polling)	2m 52s
Build and test (stable, true, --no-default-features)	4m 47s
Build & Test Examples (example_electrum)	51s
Build and test (stable, true, --all-features)	3m 54s
Check WASM	3m 8s
Build & Test Examples (example_esplora)	58s
Build and test (1.63.0, --no-default-features)	6m 17s
Build & Test Examples (example_wallet_electrum)	48s
Build and test (1.63.0, --all-features)	5m 31s
Build & Test Examples (example_wallet_esplora_async)	58s
Rust fmt	5s
Build & Test Examples (example_wallet_esplora_blocking)	50s
Build & Test Examples (example_wallet_rpc)	41s
prepare	2s
clippy_check	1m 22s
	36m 33s

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