Travis Kelce is making sure Taylor Swift’s upcoming birthday is one to remember! According to an insider, the NFL star “has something special planned” for the singer when she turns 34 on Wednesday, December 13. “He’s arranged a very intimate romantic dinner just for the two of them, and is also trying to pull off a semi-surprise party with the help of some of her closest friends,” the source spilled to a news outlet. Added the source: “There are whispers that he could use the opportunity to propose — that’s what everyone, including Taylor, is hoping for!” As OK! reported, the pair is full spee…