[DL]String additions to 'gtk.gtk-3-24'

[GNOME Status Pages <noreply gnome org>]

This is an automatic notification from status generation scripts on:
https://l10n.gnome.org.

There have been following string additions to module 'gtk.gtk-3-24':

+ "Whether to use overlay scrollbars"

Note that this doesn't directly indicate a string freeze break, but it
might be worth investigating.
https://gitlab.gnome.org/GNOME/gtk+/commits/gtk-3-24