Update elliptic-curve and shlex (#490) #1078

Job	Run time
lint	14s
build (stable)	1m 6s
build-all-features (stable)	1m 5s
build-no-alloc (thumbv6m-none-eabi)	1m 11s
build-all-features (beta)	1m 11s
build-no-alloc (thumbv7m-none-eabi)	1m 21s
build-all-features (nightly-2023-10-01)	1m 12s
build (beta)	1m 10s
build-no-alloc (thumbv8m.main-none-eabi)	1m 11s
build (nightly-2023-10-01)	1m 13s
build-no-alloc (aarch64-linux-android)	1m 25s
clippy (stable)	55s
build-no-alloc (aarch64-apple-ios)	1m 12s
clippy (beta)	1m 3s
coverage	1m 24s
build-no-alloc (wasm32-unknown-unknown)	1m 15s
deny (advisories)	44s
doc (stable)	52s
deny (bans licenses sources)	44s
doc (beta)	50s
sort	39s
test (stable)	2m 37s
test (beta)	2m 32s
test (nightly-2023-10-01)	2m 46s
	29m 52s

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