[Interop][Refstack] meeting time changed for the summer

Team, The group meeting will be on Fridays 2 hours earlier at 14pm UTC. Meeting info and minutes are still the same https://meetpad.opendev.org/interop <https://www.google.com/url?q=https://meetpad.opendev.org/interop&sa=D&source=calendar&ust=1625692286551000&usg=AOvVaw0zuFw-byNddw5jO8p9cwHj> https://etherpad.opendev.org/p/interop <https://www.google.com/url?q=https://etherpad.opendev.org/p/interop&sa=D&source=calendar&ust=1625692286551000&usg=AOvVaw1ub5UHAnoS8Iu7n6Qy2itL> -- Arkady Kanevsky, Ph.D. Phone: 972 707-6456 Corporate Phone: 919 729-5744 ext. 8176456