sha1-checked: bump digest to `0.11.0-pre.8` #28

Job	Run time
cross (1.72.0, aarch64-unknown-linux-gnu, default)	42s
cross (1.72.0, powerpc-unknown-linux-gnu, default)	52s
cross (stable, aarch64-unknown-linux-gnu, default)	41s
cross (stable, powerpc-unknown-linux-gnu, default)	47s
minimal-versions / minimal-versions	50s
set-msrv / set-msrv	6s
linux (x86_64-unknown-linux-gnu, 1.72.0)	36s
build (1.72.0, thumbv7em-none-eabi)	18s
macos (1.72.0)	35s
linux (x86_64-unknown-linux-gnu, stable)	33s
build (1.72.0, wasm32-unknown-unknown)	31s
macos (stable)	29s
build (1.72.0, loongarch64-unknown-linux-gnu)	21s
windows (x86_64-pc-windows-gnu, 1.72.0)	55s
build (stable, thumbv7em-none-eabi)	21s
windows (x86_64-pc-windows-gnu, stable)	1m 11s
build (stable, wasm32-unknown-unknown)	26s
build (stable, loongarch64-unknown-linux-gnu)	22s
	10m 36s

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