Bump `cipher` dependency to v0.5.0-rc.2 #933

Job	Run time
test (stable)	24s
test (1.85.0)	20s
build (1.85.0, thumbv7em-none-eabi)	19s
build (stable, wasm32-unknown-unknown)	20s
build (1.85.0, wasm32-unknown-unknown)	17s
build (stable, thumbv7em-none-eabi)	17s
minimal-versions	0s
	1m 57s

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