/usr/lib/ is in libkf5networkmanagerqt-dev 5.18.0-0ubuntu1.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/x86_64-linux-gnu/
/usr/lib/x86_64-linux-gnu/cmake/
/usr/lib/x86_64-linux-gnu/cmake/KF5NetworkManagerQt/
/usr/lib/x86_64-linux-gnu/cmake/KF5NetworkManagerQt/KF5NetworkManagerQtTargets.cmake
/usr/lib/x86_64-linux-gnu/cmake/KF5NetworkManagerQt/KF5NetworkManagerQtTargets-debian.cmake
/usr/lib/x86_64-linux-gnu/cmake/KF5NetworkManagerQt/KF5NetworkManagerQtConfig.cmake
/usr/lib/x86_64-linux-gnu/cmake/KF5NetworkManagerQt/KF5NetworkManagerQtConfigVersion.cmake
/usr/lib/x86_64-linux-gnu/qt5/
/usr/lib/x86_64-linux-gnu/qt5/mkspecs/
/usr/lib/x86_64-linux-gnu/qt5/mkspecs/modules/
/usr/lib/x86_64-linux-gnu/qt5/mkspecs/modules/qt_NetworkManagerQt.pri
/usr/lib/x86_64-linux-gnu/libKF5NetworkManagerQt.so