Migrate to `hybrid-array`; MSRV 1.65 #1520

Job	Run time
build (1.65.0, thumbv7em-none-eabi)	5m 23s
build (1.65.0, wasm32-unknown-unknown)	4m 49s
test (1.65.0)	4m 36s
build (stable, thumbv7em-none-eabi)	12s
test (stable)	1m 29s
build (stable, wasm32-unknown-unknown)	45s
minimal-versions / minimal-versions	51s
	18m 5s

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