Update bitcoin_hashes to 1.0 #748

Job	Run time
Test 32-bit version	54s
Bench - nightly toolchain	2m 7s
Docs - stable toolchain	1m 57s
Cross test	1m 41s
Test - stable toolchain (recent)	5m 49s
Test - msrv toolchain (recent)	1m 56s
Test - nightly toolchain (recent)	6m 50s
Lint - nightly toolchain	1m 25s
Docs - nightly toolchain	1m 23s
Check WASM	37s
	24m 39s

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