Bump `digest` to v0.11.0-pre.3; MSRV 1.71 #875

Job	Run time
cross (1.65, aarch64-unknown-linux-gnu, default)	2m 2s
cross (1.65, powerpc-unknown-linux-gnu, default)	2m 16s
cross (stable, aarch64-unknown-linux-gnu, default)	40s
cross (stable, powerpc-unknown-linux-gnu, default)	59s
minimal-versions / minimal-versions	42s
set-msrv / set-msrv	12s
build (1.65.0, thumbv7em-none-eabi)	1m 56s
build (1.65.0, wasm32-unknown-unknown)	1m 43s
test (1.65.0)	2m 5s
build (stable, thumbv7em-none-eabi)	23s
test (stable)	37s
build (stable, wasm32-unknown-unknown)	28s
	14m 3s

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