Bump `crypto-common` to v0.2.0-pre.2 #485

Job	Run time
build (1.65.0, thumbv7em-none-eabi)	1m 24s
build (1.65.0, wasm32-unknown-unknown)	1m 23s
test (1.65.0)	1m 17s
build (stable, thumbv7em-none-eabi)	21s
test (stable)	16s
build (stable, wasm32-unknown-unknown)	23s
minimal-versions / minimal-versions	36s
	5m 40s

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