cmpv2

der: fix CI config for path to `der_derive` (#1460) #1273

Job	Run time
build (1.75.0, thumbv7em-none-eabi)	32s
minimal-versions	0s
build (1.75.0, wasm32-unknown-unknown)	42s
build (stable, thumbv7em-none-eabi)	33s
build (stable, wasm32-unknown-unknown)	30s
test (1.75.0)	7m 34s
test (stable)	6m 29s
	16m 20s

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