Fix PHP 8.4 deprecation warning on str_getcsv() use

Author: alecpl

program/lib/Roundcube/rcube_csv2vcard.php

@@ -521,7 +521,7 @@ protected function parse_line($line)
             return [];
         }
 
-        $fields = str_getcsv($line);
+        $fields = str_getcsv($line, ',', '"', "\\");
 
         return $fields;
     }