bp384

Bump `ecdsa` to v0.17.0-pre.4 #1305

Job	Run time
build (1.73.0, thumbv7em-none-eabi)	43s
build (1.73.0, wasm32-unknown-unknown)	30s
doc	53s
build (stable, thumbv7em-none-eabi)	25s
build (stable, wasm32-unknown-unknown)	22s
test (1.73.0)	36s
test (stable)	31s
	4m 0s

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