Marriage-phobic Vanna White has been dragging her feet over marching down the aisle with longtime beau John Donaldson, but sources reportedly claim she’s now had a change of heart, RadarOnline.com has learned. Insiders dished that the Wheel of Fortunecohost plans to take advantage of the beautiful scenery in Hawaii and finally tie the knot! Sources snitched Vanna, 67, loves the Pacific Island state for its romance and stunning vistas — and she’ll be spending plenty of time there this year anyway while taping Wheel of Fortune with new cohost Ryan Seacrest. “She was opposed to getting married bu…