Bump `digest` to v0.11.0-pre.9 #692

Job	Run time
minimal-versions / minimal-versions	30s
set-msrv / set-msrv	2s
test (1.74.0)	26s
build (1.74.0, thumbv7em-none-eabi)	25s
test (stable)	29s
build (1.74.0, wasm32-unknown-unknown)	27s
build (stable, thumbv7em-none-eabi)	23s
build (stable, wasm32-unknown-unknown)	17s
	2m 59s

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