Change to phone-friendly emojis for notifications

app/models/concerns/foreman_notification_send/notification_extensions.rb

@@ -17,13 +17,13 @@ module ForemanNotificationSend
     def level_to_symbol
       case notification_blueprint.level
       when 'success'
-        '✅'
+        '✔️'
       when 'info'
-        '🛈'
+        'ℹ️'
       when 'warning'
-        '⚠'
+        '⚠️'
       else
-        '❓'
+        '❔'
       end
     end