fix(database): use ChatType enum instead of str for chat_type parameter

Author: alissonlauffer

eduu/database/localization.py

@@ -10,7 +10,7 @@
 conn = database.get_conn()
 
 
-async def set_db_lang(chat_id: int, chat_type: str, lang_code: str):
+async def set_db_lang(chat_id: int, chat_type: ChatType, lang_code: str):
     if chat_type in {ChatType.PRIVATE, ChatType.BOT}:
         await conn.execute(
             "UPDATE users SET chat_lang = ? WHERE user_id = ?", (lang_code, chat_id)