Bump `password-hash` dependency to v0.6.0-rc.0 (#512) #924

Job	Run time
build (1.72.0, thumbv7em-none-eabi)	19s
test (1.72.0)	43s
build (1.72.0, wasm32-unknown-unknown)	18s
build (stable, thumbv7em-none-eabi)	21s
test (stable)	42s
build (stable, wasm32-unknown-unknown)	22s
minimal-versions / minimal-versions	1m 42s
	4m 27s

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