I am creating Xmas cards with a photo of one of our cats and a caption. Which is correct: Season's Greetings (with apostrophe) or Seasons Greetings (without apostrophe)? Inquiring minds want to know.

Jon

macOS 11.7.10, iMac Retina 5K 27-inch, late 2014, 3.5 GHz Intel Core i5, 1 TB fusion drive, 16 GB RAM, Epson SureColor P600, Photoshop CC, Lightroom CC, MS Office 365