Pull translation updates from Weblate

Translators:

Ajeje Brazorf          Sardinian
Danial Behzadi         Persian
nikos                  Greek
Olexandr Nesterenko    Ukrainian
Sérgio Marques         Portuguese (Portugal)
Svetoslav Yordanov     Bulgarian
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Internal Server Error - Gitea: Git with a cup of tea
500 Internal Server Error

Gitea Version: 1.28.0+dev-477-g8b6ad49a5f