Added -Wno-stringop-overflow for GPU unit tests as well (#24638)

### Details:
- The same #24628 for
GPU Unit tests

src/plugins/intel_gpu/tests/unit/CMakeLists.txt

@@ -57,7 +57,7 @@ ov_set_threading_interface_for(${TARGET_NAME})
 
 # Workaround to avoid warnings during LTO build
 if(CMAKE_CXX_COMPILER_ID STREQUAL "GNU")
-    set_target_properties(${TARGET_NAME} PROPERTIES LINK_FLAGS_RELEASE "-Wno-error=maybe-uninitialized -Wno-maybe-uninitialized")
+    set_target_properties(${TARGET_NAME} PROPERTIES LINK_FLAGS_RELEASE "-Wno-error=maybe-uninitialized -Wno-maybe-uninitialized -Wno-stringop-overflow")
 endif()
 
 set_target_properties(${TARGET_NAME} PROPERTIES INTERPROCEDURAL_OPTIMIZATION_RELEASE ${ENABLE_LTO})