Migrate to `hybrid-array`; MSRV 1.65 #1493

Job	Run time
build (1.57.0, thumbv7em-none-eabi)	20s
build (1.57.0, wasm32-unknown-unknown)	16s
test (1.57.0)	19s
build (stable, thumbv7em-none-eabi)	22s
test (stable)	17s
build (stable, wasm32-unknown-unknown)	18s
minimal-versions / minimal-versions	26s
	2m 18s

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