cmake: Depend on libbsd if DPDK depends on it #589

Job	Run time
Test with C++20 modules enabled / test	11m 48s
Test (clang++, C++20, dev) / test	16m 43s
Test (clang++, C++20, debug) / test	17m 2s
Test with DPDK enabled / test	22m 26s
Test (clang++, C++20, release) / test	16m 24s
Test (clang++, C++23, debug) / test	16m 49s
Test (clang++, C++23, dev) / test	16m 39s
Test (clang++, C++23, release) / test	15m 21s
Test (g++, C++20, debug) / test	18m 24s
Test (g++, C++20, dev) / test	11m 35s
Test (g++, C++20, release) / test	16m 50s
Test (g++, C++23, debug) / test	18m 12s
Test (g++, C++23, dev) / test	11m 50s
Test (g++, C++23, release) / test	16m 21s
	3h 46m 24s

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