signature: bump `digest` to v0.11.0-pre.3; MSRV 1.71 #1484

Job	Run time
build (1.65.0, thumbv7em-none-eabi)	1m 48s
test (1.65.0)	1m 48s
build (1.65.0, wasm32-unknown-unknown)	1m 44s
test (stable)	17s
build (stable, thumbv7em-none-eabi)	14s
build (stable, wasm32-unknown-unknown)	16s
minimal-versions / minimal-versions	31s
	6m 38s

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