Why don't you write the sentence directly in German and Turkish instead of translating it in the Lang file?
In Luna:
the_skin_by_pongo.zip/ui_nextgen/common/ui/the_skin_mods.ui
<TEXT class="about_version web font_info bd color_inf_main" text=(tostring(m_i18n("Deutsch Version" + " 12 Januar 2023")))/>
and
<TEXT class="about_version web font_info bd color_inf_main" text=(tostring(m_i18n("Turkisch Versiyon" + " 12 Ocak 2023")))/>
and in Nextgen:
the_skin_by_pongo.zip/ui_nextgen/common/ui/the_skin_by_pongo_mods.ui
<TEXT class="about_version font_info bd color_inf_main" text=(tostring(m_i18n("Deutsch Version" + " 12 Januar 2023")))/>
and
<TEXT class="about_version font_info bd color_inf_main" text=(tostring(m_i18n("Turkisch Versiyon" + " 12 Ocak 2023")))/>
The software doesn't recognize languages, what is written is what it appears....:)))