Merge rust-bitcoin/corepc#9: Add support for Bitcoin Core v27.2 #20

Job	Run time
Docs - stable toolchain (recent)	1m 0s
Prepare	3s
Integration tests - stable toolchain (28_0)	1m 40s
Integration tests - stable toolchain (27_1)	46s
Test - 1.63.0 toolchain (minimal)	2m 12s
Test - stable toolchain (minimal)	55s
Integration tests - stable toolchain (27_0)	1m 24s
Test - 1.63.0 toolchain (recent)	1m 13s
Test - stable toolchain (recent)	37s
Integration tests - stable toolchain (26_2)	51s
Integration tests - stable toolchain (26_1)	55s
Integration tests - stable toolchain (26_0)	1m 4s
Integration tests - stable toolchain (25_2)	45s
Integration tests - stable toolchain (25_1)	49s
Integration tests - stable toolchain (25_0)	53s
Integration tests - stable toolchain (24_2)	42s
Integration tests - stable toolchain (24_1)	44s
Integration tests - stable toolchain (24_0_1)	1m 4s
Integration tests - stable toolchain (23_2)	48s
Integration tests - stable toolchain (23_1)	1m 0s
Integration tests - stable toolchain (23_0)	1m 8s
Integration tests - stable toolchain (22_1)	1m 27s
Integration tests - stable toolchain (22_0)	44s
Integration tests - stable toolchain (0_21_2)	54s
Integration tests - stable toolchain (0_20_2)	41s
Integration tests - stable toolchain (0_19_1)	55s
Integration tests - stable toolchain (0_18_1)	1m 6s
Integration tests - stable toolchain (0_17_1)	1m 21s
Docs - nightly toolchain (recent)	48s
Test - nightly toolchain (minimal)	41s
Lint - nightly toolchain (recent)	38s
Test - nightly toolchain (recent)	37s
	30m 25s

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