Bump `cipher` to v0.5.0-pre.7 (#168) #111

Job	Run time
build (1.71.0, thumbv7em-none-eabi)	20s
build (1.71.0, wasm32-unknown-unknown)	16s
build (stable, thumbv7em-none-eabi)	8s
test (1.72.0)	19s
build (stable, wasm32-unknown-unknown)	9s
test (stable)	18s
minimal-versions	0s
	1m 30s

Provide feedback