/usr/share/plasma/plasmoids/ is in print-manager 4:15.12.3-0ubuntu1.
This file is owned by root:root, with mode 0o755.
..
/usr/share/plasma/plasmoids/org.kde.plasma.printmanager/
/usr/share/plasma/plasmoids/org.kde.plasma.printmanager/contents/
/usr/share/plasma/plasmoids/org.kde.plasma.printmanager/contents/config/
/usr/share/plasma/plasmoids/org.kde.plasma.printmanager/contents/config/config.qml
/usr/share/plasma/plasmoids/org.kde.plasma.printmanager/contents/config/main.xml
/usr/share/plasma/plasmoids/org.kde.plasma.printmanager/contents/ui/
/usr/share/plasma/plasmoids/org.kde.plasma.printmanager/contents/ui/CompactRepresentation.qml
/usr/share/plasma/plasmoids/org.kde.plasma.printmanager/contents/ui/PopupDialog.qml
/usr/share/plasma/plasmoids/org.kde.plasma.printmanager/contents/ui/PrinterItem.qml
/usr/share/plasma/plasmoids/org.kde.plasma.printmanager/contents/ui/StatusView.qml
/usr/share/plasma/plasmoids/org.kde.plasma.printmanager/contents/ui/config.qml
/usr/share/plasma/plasmoids/org.kde.plasma.printmanager/contents/ui/printmanager.qml
/usr/share/plasma/plasmoids/org.kde.plasma.printmanager/metadata.desktop