EVALUATION OF ANTIBACTERIAL ACTIVITY OF MACERATED OIL FROM Lemon Balm (Melissa officinalis L, Lamiaceae), Thyme (Thymus vulgaris L, Lamiaceae), Mint (Mentha longifolia L, Lamiaceae) and Marigold (Calendula officinalis, Amaryllidaceae) WITH MODIFIED TUBE AGAR DILUTION METHOD AGAINST YERSINIA RUCKERI