With Goop’s beauty sales up 40 percent in 2023, Gwyneth Paltrow is looking to fan the flames of growth with its first-ever mascara. FeatherLash Lifting Serum Mascara, $28, will launch Sunday and become the third pillar in Goop’s color cosmetics business, joining Colorblur Glow Balm and Clean Nourishing Lip Balm. As with the other products,…