message: WA for gmock failure with LLVM 13
diff: @@ -36,6 +36,8 @@ if(CMAKE_BUILD_TYPE STREQUAL "Release")
  # But building Google Test, we need it to let it know that optimized build is used.
  target_compile_definitions(gtest PRIVATE NDEBUG)
  endif()
  +# This is WA for https://github.com/google/googletest/issues/1305
  +target_compile_options(gmock PRIVATE -Wno-deprecated-copy)
  ####################### Configure and add submodules ########################
  