Bump `cipher` to `0.5.0-pre.4` #568

Job	Run time
build (1.65.0, thumbv7em-none-eabi)	3m 33s
test (1.65.0)	3m 23s
build (1.65.0, wasm32-unknown-unknown)	3m 22s
test (stable)	14s
build (stable, thumbv7em-none-eabi)	14s
build (stable, wasm32-unknown-unknown)	10s
minimal-versions / minimal-versions	24s
	11m 20s

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