Bump `digest` to v0.11 #3416

Job	Run time
build (stable, thumbv7em-none-eabi)	26s
build (stable, wasm32-unknown-unknown)	28s
test (i686-unknown-linux-gnu, 1.85.0, sudo apt update && sudo apt install gcc-multilib)	3m 52s
build (1.85.0, wasm32-unknown-unknown)	26s
build (1.85.0, thumbv7em-none-eabi)	23s
test (x86_64-unknown-linux-gnu, 1.85.0)	3m 31s
minimal-versions / minimal-versions	54s
test (x86_64-unknown-linux-gnu, stable)	3m 16s
test (i686-unknown-linux-gnu, stable, sudo apt update && sudo apt install gcc-multilib)	3m 27s
	16m 43s

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