Merge remote-tracking branch 'origin/yaml-cpp-fix-dependency' into integration_2024_w43 (!3063)

Update yaml-cpp dependency handling

- Added CPM fallback in case package is not found automatically.
- Using yaml-cpp::yaml-cpp target instead of yaml-cpp to silence
  deprecation warnings on newer cmake versions.

CMakeLists.txt

@@ -32,7 +32,7 @@ set (OPENAIR_DIR     ${CMAKE_SOURCE_DIR})
 
 include("cmake_targets/macros.cmake")
 if(NOT DEFINED ENV{CPM_SOURCE_CACHE})
- set(CPM_SOURCE_CACHE ~/.cache/cpm/)
+  set(CPM_SOURCE_CACHE ~/.cache/cpm/ CACHE FILEPATH "Directory to download CPM dependencies")
 endif()
 include("cmake_targets/CPM.cmake")