Bump `digest` to v0.11.0-pre.3; MSRV 1.71 #178

Job	Run time
minimal-versions / minimal-versions	39s
set-msrv / set-msrv	3s
test (1.65.0)	1m 48s
build (1.65.0, thumbv7em-none-eabi)	1m 28s
test (stable)	26s
build (1.65.0, wasm32-unknown-unknown)	1m 33s
build (stable, thumbv7em-none-eabi)	19s
build (stable, wasm32-unknown-unknown)	19s
	6m 35s

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