cmpv2

serdect: bump `toml` to v0.8 #752

Job	Run time
build (1.65.0, thumbv7em-none-eabi)	5m 1s
build (1.65.0, wasm32-unknown-unknown)	6m 26s
build (stable, thumbv7em-none-eabi)	44s
test (1.65.0)	22m 5s
build (stable, wasm32-unknown-unknown)	40s
test (stable)	14m 30s
minimal-versions / minimal-versions	10m 47s
	1h 0m 13s

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