bp384

Bump `elliptic-curve` crate to v0.14.0-pre.2 #1278

Job	Run time
build (1.73.0, thumbv7em-none-eabi)	30s
doc	48s
build (1.73.0, wasm32-unknown-unknown)	29s
build (stable, thumbv7em-none-eabi)	24s
build (stable, wasm32-unknown-unknown)	24s
test (1.73.0)	37s
test (stable)	30s
	3m 42s

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