Cargo.lock: bump `zeroize` to v1.8.1 #112

Job	Run time
miri (x86_64-unknown-linux-gnu)	35s
miri (s390x-unknown-linux-gnu)	49s
minimal-versions / minimal-versions	20s
set-msrv / set-msrv	3s
build (1.60.0, thumbv7em-none-eabi)	1m 4s
test (1.60.0)	1m 1s
build (1.60.0, wasm32-unknown-unknown)	1m 5s
test (stable)	11s
build (stable, thumbv7em-none-eabi)	19s
build (stable, wasm32-unknown-unknown)	17s
	5m 44s

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