Merge ElementsProject/elements-miniscript#67: update rust-bitcoin to … #88

Job	Run time
fuzz (roundtrip_miniscript_str)	4m 27s
fuzz (roundtrip_miniscript_script)	4m 22s
fuzz (parse_descriptor)	4m 40s
fuzz (roundtrip_semantic)	4m 35s
fuzz (parse_descriptor_secret)	4m 57s
fuzz (roundtrip_descriptor)	4m 38s
fuzz (roundtrip_concrete)	4m 49s
fuzz (compile_descriptor)	4m 43s
fuzz (roundtrip_confidential)	4m 43s
verify-execution	4s
	41m 58s

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