Fuzz

Upgrade to `bitcoin v0.32.0` #417

Job	Run time
fuzz (roundtrip_semantic)	3m 11s
fuzz (parse_descriptor)	4m 57s
fuzz (parse_descriptor_secret)	3m 0s
fuzz (roundtrip_miniscript_script)	3m 5s
fuzz (roundtrip_miniscript_str)	3m 16s
fuzz (roundtrip_descriptor)	3m 7s
fuzz (roundtrip_concrete)	3m 5s
fuzz (compile_descriptor)	3m 6s
verify-execution	6s
	26m 53s

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