The Wikipedia page on Ma Katyayini mentions:
She is first mentioned in the Taittiriya Aranyaka part of the Yajurveda. Skanda Purana mentions her being created out of the spontaneous anger of Gods, which eventually led to slaying the demon, Mahishasura, mounted on the lion given to her by Goddess Parvati. This occasion is celebrated during the annual Durga Puja festival in most parts of India
Is there a mention of Goddess Katyayini or any other Nava Durga forms in the Tattiriya Aranyaka or any Vedic scripture? If not which is the oldest scripture to refer to any of them (separately or together as a group)?