Skips all admin spawn ships in outpost unit tests #19682

Job	Run time
Compile Maps	43s
Run Linters	2m 44s
Windows Build	1m 57s
Integration Tests (BASIC_TESTS) / run_integration_tests	3m 11s
Integration Tests (PLANET_GEN_TEST) / run_integration_tests	5m 19s
Integration Tests (CREATE_AND_DESTROY_TEST) / run_integration_tests	2m 38s
Integration Tests (RUIN_PLACEMENT_TEST) / run_integration_tests	4m 15s
Integration Tests (SHIP_PLACEMENT_TEST) / run_integration_tests	6m 14s
	27m 1s

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