Log Message: opencv opencv-contrib-face: updated to 3.4.15 OpenCV 3.4.15 has been released. Bug fixes, optimizations and other enhancements \ are propagated into OpenCV 4.5.3. Long-lived OpenCV 3.x release series is here since 2015. We are going to reduce \ support of 3.x branch in the future to move forward to OpenCV 5.0.