Pull non-website PO files from Weblate
@emmapeel told us our translations were moved from Transifex to Weblate and are now pushed to the `tails-misc` branch.
She does not know how to handle the `tails-misc_release` branch with Weblate.
Let's figure this out together :)
Context for the (now broken) previous status quo: tails/tails#16774, tails/tails!113
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