Bump `ecdsa` to v0.17.0-pre.4 #1300

Job	Run time
build (1.73.0, thumbv7em-none-eabi)	28s
build (1.73.0, wasm32-unknown-unknown)	30s
doc	55s
build (stable, thumbv7em-none-eabi)	22s
build (stable, wasm32-unknown-unknown)	22s
test (1.73.0)	38s
test (stable)	26s
	3m 41s

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