By Lucia Mutikani WASHINGTON (Reuters) – The number of Americans filing new claims for unemployment benefits unexpectedly rose last week, touching the highest level in three months, but there is no material shift in labor market conditions amid strong demand for workers. The report from the Labor Department on Thursday also showed that the number of people on state unemployment rolls was the smallest in more than 52 years at the end of April. Companies, scrambling to fill record job openings, are boosting wages, contributing to keeping inflation elevated. “There is no change in the underlying …