By Arathy Somasekhar HOUSTON (Reuters) -Oil rose over 1% on Friday, as an increasing number of oil tankers diverted course from the Red Sea following overnight air and sea strikes by the U.S. and Britain on Houthi targets in Yemen after attacks on shipping by the Iran-backed group. Brent crude futures were up 90 cents, or 1.13%, at $78.31 a barrel at 12:11 p.m. ET (17:11 GMT). During the session they had climbed over $3 to more than $80. U.S. West Texas Intermediate crude futures climbed 88 cents, or 1.15%, to $72.85. It was up more than $3 at its session high. Both benchmarks were on course t…