Bump `hybrid-array` to v0.2.0-rc.4 #2326

Job	Run time
build (1.71.0, thumbv7em-none-eabi)	19s
build (1.71.0, wasm32-unknown-unknown)	19s
test (1.71.0)	25s
build (stable, thumbv7em-none-eabi)	12s
test (stable)	15s
build (stable, wasm32-unknown-unknown)	25s
	1m 55s

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