Bump `hybrid-array` depenency to v0.2.0-pre.6 #307

Job	Run time
build (1.65.0, armv7a-none-eabi)	1m 24s
test (1.65.0)	1m 22s
build (1.65.0, thumbv7em-none-eabi)	1m 19s
test (stable)	18s
build (1.65.0, wasm32-unknown-unknown)	1m 27s
build (stable, armv7a-none-eabi)	14s
build (stable, thumbv7em-none-eabi)	15s
build (stable, wasm32-unknown-unknown)	16s
minimal-versions / minimal-versions	23s
	6m 58s

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