[Tails-l10n] Release schedule for Tails 5.19

Hi,

we still haven't decided who will be the RM for Tails 5.19. You will
find this information on https://tails.net/contribute/calendar/ when we
will know better.

The current plan is:
- Monday, October 30: build images, start testing
- Tuesday, October 31: releasing

@testers, please let me know how much time you'll have for manual QA
from Monday 17:00 to Tuesday 11:00 (Europe/Berlin)

--
boyska