Bump `crypto-common` to v0.2.0-pre.2 #373

Job	Run time
build (1.65.0, armv7a-none-eabi)	1m 23s
build (1.65.0, thumbv7em-none-eabi)	1m 24s
build (1.65.0, wasm32-unknown-unknown)	1m 27s
build (stable, armv7a-none-eabi)	13s
build (stable, thumbv7em-none-eabi)	19s
build (stable, wasm32-unknown-unknown)	17s
test (1.65.0)	1m 25s
test (stable)	19s
minimal-versions / minimal-versions	22s
	7m 9s

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