[Inkscape-translator] Update: schedule for 1.3.1

Hello fellow translators,

last translations for the Inkscape 1.3.1 user interface can still be submitted until November 12.

The current plan is to release it on November 18.

Find the po files here:

https://gitlab.com/inkscape/inkscape/-/jobs/artifacts/1.3.x/download?job=tra...

And info about what to do with them here: https://wiki.inkscape.org/wiki/Interface_translation

Maren