zeroize_derive: make version `*-pre` #2262

Job	Run time
test (stable)	18s
build (stable, thumbv7em-none-eabi)	17s
test (1.85.0)	17s
build (1.85.0, wasm32-unknown-unknown)	21s
build (1.85.0, thumbv7em-none-eabi)	16s
build (stable, wasm32-unknown-unknown)	20s
minimal-versions / minimal-versions	34s
	2m 23s

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