String freeze break request for GNOME Boxes

[Felipe Borges <felipeborges gnome org>]

Hi,

During this cycle we added support for handling a few file formats,
yet we forgot to update the UI label that indicates the supported
files. See the screenshot at
https://gitlab.gnome.org/GNOME/gnome-boxes/-/merge_requests/413

I'd like to ask permission to merge
https://gitlab.gnome.org/GNOME/gnome-boxes/-/merge_requests/413 and
apologize for forgetting about this change.

Regards,
Felipe Borges.