fix: do not fail when a notification cannot be sent

pkg/realDynDns/realDynDns.go

@@ -104,7 +104,7 @@ func (c *ChangeDetector) detectAndApplyChanges() (int, error) {
 					c.logger.Warn("Failed to send notification",
 						slog.String("error", err.Error()),
 					)
-					return numberUpdated, err
+					continue
 				}
 
 				c.logger.Info("Updating record",