By Makini Brice and Richard Cowan WASHINGTON (Reuters) -The U.S. Senate will not vote on a package to provide more aid to Ukraine and bolster U.S. border security before early next year, as Democratic and Republican negotiators continue their work, chamber leaders said on Tuesday. “Our negotiators are going to be working very, very diligently over the December and January break period, and our goal is to get something done as soon as we get back,” Senate Democratic Leader Chuck Schumer told reporters. The chamber’s No. 2 Republican, John Thune, also said a deal would not be reached before Janu…