Add missing @Test to sanitizeLists()

See gh-32792

spring-boot-project/spring-boot-actuator/src/test/java/org/springframework/boot/actuate/context/properties/ConfigurationPropertiesReportEndpointTests.java

@@ -189,6 +189,7 @@ class ConfigurationPropertiesReportEndpointTests {
 						}));
 	}
 
+	@Test
 	void sanitizeLists() {
 		new ApplicationContextRunner()
 				.withUserConfiguration(EndpointConfigWithShowNever.class, SensiblePropertiesConfiguration.class)