misc: 12.0 initial release for Ecne

requested review from @ruben

added 2 commits

• 2e62b7a2 - extra/ubiquity-slideshow-trisquel: update l10n-de translations, thanks knife.
• bd2a35fc - apply mate-pluma fix

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added 5 commits

• bd2a35fc...337649e5 - 4 commits from branch trisquel:master
• fdad3042 - Merge branch 'master' of...

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mentioned in commit 9593ea02

merged