By Tim Hepher and Jamie Freed PARIS/SINGAPORE (Reuters) – Airbus is quietly relaxing pressure on suppliers to commit to a sharp output hike to 75 narrow-body jets a month by mid-decade, amid growing doubts over the ability of battered supply chains to meet the deadline, industry sources said. Officially, Airbus continues to target output of 75 narrow-body jets a month in 2025, after an interim target of 65 jets slipped last month. It is likely to reaffirm both output goals at an investor meeting later this week, industry sources said. But as more suppliers sound the alarm over parts and labour…