cmpv2

Bump to `signature` 3 #2022

Job	Run time
test (stable)	6m 17s
test (1.85.0)	6m 25s
build (1.85.0, wasm32-unknown-unknown)	1m 19s
build (stable, thumbv7em-none-eabi)	54s
build (stable, wasm32-unknown-unknown)	54s
build (1.85.0, thumbv7em-none-eabi)	1m 1s
minimal-versions	0s
	16m 50s

Provide feedback