Fixed CMake generator for pico platform #3008

Job	Run time
check-diff / check	25s
serialization / serialization-tests	7m 17s
rs / rs-tests / regular-tests (ubuntu-latest, stable)	8m 30s
rs / rs-benchmark-tests / benchmark-tests	15m 47s
c / benchmarking / benchmark-tests	6m 50s
c / ccpp / regular-tests (ubuntu-latest)	22m 38s
c / default / regular-tests (ubuntu-latest)	26m 1s
c / verifier / run (ubuntu-latest)	5m 31s
cpp / cpp-benchmark-tests / benchmark-tests	12m 12s
cpp / cpp-ros2-tests / cpp-ros2-tests	38m 13s
cpp / cpp-tests / regular-tests (ubuntu-latest)	49m 18s
py / py-tests / regular-tests (ubuntu-latest)	17m 27s
ts / benchmarking / benchmark-tests	3m 40s
ts / ts-tests / regular-tests (ubuntu-latest)	20m 3s
	3h 53m 52s

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