chore: Update translations (#11141)

- Update translations

config/locales/el.yml

@@ -53,6 +53,8 @@ el:
       invalid_message_type: 'Μη έγκυρος τύπος μηνύματος. Δεν επιτρέπεται η ενέργεια'
     slack:
       invalid_channel_id: 'Invalid slack channel. Please try again'
+    channel_service:
+      invalid_source_id: "This conversation may have originally belonged to a different contact but is now showing here due to a merge or update. You won't be able to continue this conversation. Please create a new conversation to proceed."
     inboxes:
       imap:
         socket_error: Παρακαλώ ελέγξτε τη σύνδεση δικτύου, τη διεύθυνση IMAP και προσπαθήστε ξανά.