Migrate to `hybrid-array`; MSRV 1.65 (#944) #1515

Job	Run time
test (1.57.0)	20s
build (1.57.0, thumbv7em-none-eabi)	17s
test (stable)	43s
build (1.57.0, wasm32-unknown-unknown)	24s
build (stable, thumbv7em-none-eabi)	25s
build (stable, wasm32-unknown-unknown)	41s
minimal-versions / minimal-versions	27s
	3m 17s

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