eax

Bump `cipher` to `0.5.0-pre.4` #702

Job	Run time
build (1.56.0, thumbv7em-none-eabi)	3m 24s
test (1.56.0)	3m 27s
build (1.56.0, wasm32-unknown-unknown)	3m 37s
test (stable)	15s
build (stable, thumbv7em-none-eabi)	22s
build (stable, wasm32-unknown-unknown)	23s
	11m 28s

Provide feedback