feat: Translate frontend/src/i18n/en.json in ru

97% of minimum 50% translated source file: 'frontend/src/i18n/en.json'
on 'ru'.

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

frontend/src/i18n/ru.json

@@ -85,7 +85,7 @@
     "columnSeparator": "Разделитель столбцов",
     "csvSeparators": {
       "comma": "Запятая (,)",
-      "semicolon": "Semicolon (;)",
+      "semicolon": "Точка с запятой (;)",
       "both": "Both (,) and (;)"
     }
   },