You should only do that if your Linux distribution allows it. GLib is a very low level component, and the recommendation is to go through your own Linux distribution for upgrades, instead of replacing random system components.
Why do you want to update the version of GLib?
GNOME 44, as defined by the release team, ships with GLib 2.76. You can install a later version, if you want.
What would that document be?
GLib is a shared dependency of the projects under the GNOME umbrella; it gets released every six months, alongside GNOME. While projects released as part of GNOME may have requirement on an earlier version of GLib, they are required to work with the latest stable version at the time of the GNOME release.