Hey there, thanks for reaching out!
The glibc component will be inherent within our build environment, given it’s a Linux distro (hence why it doesn’t appear in our ‘included software’ list).
You could try running ldd --version as your build command, to see what version we run! Or, check out this link. Our Xenial build image runs glibc ver. 2.23.
However, our latest build image, Focal, supports 2.31. You may wish to try upgrading to this image (see How do I update my build image?)!