ci(test_apps): limit dependencies for misc test_apps

Only pull in direct dependencies for the test apps, reducing build time
as well making it possible for CI to determine if the test should run or not
when dependencies are changed.

components/lwip/test_apps/CMakeLists.txt

@@ -2,6 +2,7 @@
 cmake_minimum_required(VERSION 3.16)
 
 set(EXTRA_COMPONENT_DIRS "$ENV{IDF_PATH}/tools/unit-test-app/components")
+set(COMPONENTS main)
 
 include($ENV{IDF_PATH}/tools/cmake/project.cmake)
 project(lwip_test)