pkcs5

serdect: bump `toml` to v0.8 (#1244) #2554

Job	Run time
build (1.65.0, thumbv7em-none-eabi)	5m 11s
build (1.65.0, wasm32-unknown-unknown)	6m 20s
build (stable, thumbv7em-none-eabi)	48s
build (stable, wasm32-unknown-unknown)	41s
test (1.65.0)	7m 1s
test (stable)	1m 41s
minimal-versions / minimal-versions	1m 20s
	23m 2s

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