Merge bitcoindevkit/bdk#1988: Detect new mempool txs #7

Job	Run time
prepare	4s
Rust fmt	14s
Check no_std	18s
Rust clippy	33s
Build & Test (1.63.0, --all-features)	1m 9s
Build & Test (1.87.0, true, --no-default-features --features miniscript/no-std,bdk_chain/hashbrown)	1m 3s
Build & Test (1.63.0, --no-default-features --features miniscript/no-std,bdk_chain/hashbrown)	1m 1s
Build & Test (1.87.0, true, --all-features)	1m 16s
Build & Test (1.75.0, --no-default-features --features miniscript/no-std,bdk_chain/hashbrown)	1m 16s
Check WASM	39s
Build & Test Examples (example_esplora)	54s
Build & Test (1.75.0, --all-features)	1m 16s
Build & Test Examples (example_cli)	23s
Build & Test Examples (example_electrum)	54s
Build & Test Examples (example_bitcoind_rpc_polling)	34s
	11m 34s

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