Bump `rand` to v0.10 #3503

Job	Run time
build (stable, wasm32-unknown-unknown)	14s
build (1.85.0, thumbv7em-none-eabi)	21s
minimal-versions / minimal-versions	26s
build (1.85.0, wasm32-unknown-unknown)	22s
build (stable, thumbv7em-none-eabi)	23s
test (stable)	45s
test (1.85.0)	48s
	3m 19s

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