feat: modify ICEBERG_SYSTEM_DEPENDENCIES after found zlib

Author: xiao.dong

cmake_modules/IcebergThirdpartyToolchain.cmake

@@ -288,6 +288,9 @@ function(resolve_zlib_dependency)
   if(ZLIB_FOUND)
     list(APPEND ICEBERG_SYSTEM_DEPENDENCIES ZLIB)
     message(STATUS "ZLIB_FOUND ZLIB_LIBRARIES: ${ZLIB_LIBRARIES} ZLIB_INCLUDE_DIR: ${ZLIB_INCLUDE_DIR}")
+    set(ICEBERG_SYSTEM_DEPENDENCIES
+        ${ICEBERG_SYSTEM_DEPENDENCIES}
+        PARENT_SCOPE)
   endif()
 
 endfunction()