Merge pull request #6527 from Goober5000/kamikaze_ships_attack_subsys… #1820

Job	Run time
Linux (Debug, gcc-9)	11m 0s
Linux (Debug, gcc-13)	8m 36s
Linux (Debug, clang-16)	9m 18s
Linux (Release, gcc-9)	12m 55s
Linux (Release, gcc-13)	11m 53s
Linux (Release, clang-16)	14m 41s
Linux (Debug, gcc-13, -DFSO_BUILD_WITH_OPENGL=OFF -DFSO_BUILD_WITH_VULKAN=OFF)	2m 29s
Linux (Release, gcc-13, -DFSO_BUILD_WITH_OPENGL=OFF -DFSO_BUILD_WITH_VULKAN=OFF)	6m 52s
	1h 17m 44s

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