Migrate to `hybrid-array`; MSRV 1.65 #407

Job	Run time
build (1.65.0, thumbv7em-none-eabi)	4m 32s
test (1.65.0)	5m 57s
build (1.65.0, wasm32-unknown-unknown)	4m 40s
test (stable)	44s
build (stable, thumbv7em-none-eabi)	21s
build (stable, wasm32-unknown-unknown)	40s
minimal-versions / minimal-versions	52s
	17m 46s

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