Bump `digest` to v0.11.0-pre.3; MSRV 1.71 #154

Job	Run time
build (1.71.0, thumbv7em-none-eabi)	18s
build (1.71.0, wasm32-unknown-unknown)	19s
test (1.71.0)	28s
build (stable, thumbv7em-none-eabi)	17s
test (stable)	24s
build (stable, wasm32-unknown-unknown)	16s
minimal-versions	0s
	2m 2s

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