Bump `digest` dependency to v0.11.0-pre.4 #792

Job	Run time
loongarch64_asm	22s
minimal-versions / minimal-versions	56s
set-msrv / set-msrv	2s
test (1.71.0)	51s
build (1.71.0, thumbv7em-none-eabi)	19s
test (stable)	52s
build (1.71.0, wasm32-unknown-unknown)	25s
build (stable, thumbv7em-none-eabi)	25s
build (stable, wasm32-unknown-unknown)	18s
	4m 30s

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