Bump `ecdsa` to v0.17.0-pre.4 (#1021) #24

Job	Run time
doc	8s
test (1.73.0)	11s
test (stable)	8s
build (1.73.0, thumbv7em-none-eabi)	11s
build (1.73.0, wasm32-unknown-unknown)	13s
build (stable, thumbv7em-none-eabi)	10s
build (stable, wasm32-unknown-unknown)	15s
	1m 16s

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