signature v2.3.0-pre.7 #2856

Job	Run time
test (stable)	14s
test (1.85.0)	24s
build (1.85.0, wasm32-unknown-unknown)	17s
build (1.85.0, thumbv7em-none-eabi)	20s
build (stable, thumbv7em-none-eabi)	22s
build (stable, wasm32-unknown-unknown)	18s
	1m 55s

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