Bump `digest` to v0.11.0-pre.3; MSRV 1.71 #232

Job	Run time
minimal-versions / minimal-versions	34s
set-msrv / set-msrv	4s
build (1.65.0, thumbv7em-none-eabi)	1m 33s
test (1.65.0)	1m 41s
build (1.65.0, wasm32-unknown-unknown)	1m 38s
test (stable)	28s
build (stable, thumbv7em-none-eabi)	22s
build (stable, wasm32-unknown-unknown)	24s
	6m 44s

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