ggml : fix undefined reference errors for std::filesystem (#12092)

Signed-off-by: Ray Lee <[email protected]>

Author: hburaylee

ggml/src/CMakeLists.txt

@@ -233,7 +233,7 @@ add_library(ggml
 target_link_libraries(ggml PUBLIC ggml-base)
 
 if (CMAKE_SYSTEM_NAME MATCHES "Linux")
-    target_link_libraries(ggml PRIVATE dl)
+    target_link_libraries(ggml PRIVATE dl stdc++fs)
 endif()
 
 function(ggml_add_backend_library backend)