md5

Bump `base16ct` to v1 (#768) #1226

Job	Run time
set-msrv / set-msrv	4s
minimal-versions / minimal-versions	44s
test (stable)	28s
test (1.85.0)	33s
build (stable, wasm32-unknown-unknown)	48s
build (1.85.0, thumbv7em-none-eabi)	21s
build (stable, thumbv7em-none-eabi)	33s
build (1.85.0, loongarch64-unknown-linux-gnu)	25s
build (stable, loongarch64-unknown-linux-gnu)	20s
build (1.85.0, wasm32-unknown-unknown)	21s
	4m 37s

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