chore: Translate django.po in uz

99% of minimum 30% reviewed source file: 'django.po'
on 'uz'.

Sync of partially translated files: 
untranslated content is included with an empty translation 
or source language content depending on file format

translations/edx-platform/conf/locale/uz/LC_MESSAGES/django.po

@@ -1118,6 +1118,10 @@ msgstr ""
 "Kontent turi nomuvofiqligi: {downstream_type} {upstream_type} bilan "
 "bog‘lanib bo‘lmaydi."
 
+#: cms/lib/xblock/upstream_sync.py:179
+msgid "Linked library item was not found in the system"
+msgstr "Bog'langan kutubxona elementi tizimda topilmadi"
+
 #: cms/templates/admin/base_site.html:4 lms/templates/admin/base_site.html:3
 msgid "Django site admin"
 msgstr "Django sayt administratori"