[Tails-l10n] Maintenance on Weblate on Thu Dec 9th 2021

Hello, dear translatxrs!

We'll need to bring Weblate down for some time tomorrow to make a
configuration change on the virtual machine where the service is
hosted. It shouldn't last long, but there will be some downtime during
the following period:

    Thursday Dec 9th 2021, between 18:30 and 22:30 UTC.

Thanks for translating Tails! :)