Migrate to `hybrid-array`; MSRV 1.65 #1501

Job	Run time
build (1.65.0, thumbv7em-none-eabi)	3m 38s
build (1.65.0, wasm32-unknown-unknown)	3m 47s
build (stable, thumbv7em-none-eabi)	20s
build (stable, wasm32-unknown-unknown)	23s
test (1.65.0)	4m 29s
test (stable)	20s
minimal-versions / minimal-versions	32s
	13m 29s

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