/usr/lib/ is in libgraphviz-dev 2.26.3-10ubuntu1.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/pkgconfig/
/usr/lib/pkgconfig/libcdt.pc
/usr/lib/pkgconfig/libgraph.pc
/usr/lib/pkgconfig/libcgraph.pc
/usr/lib/libpathplan.so
/usr/lib/pkgconfig/libpathplan.pc
/usr/lib/pkgconfig/libxdot.pc
/usr/lib/pkgconfig/libgvc.pc
/usr/lib/pkgconfig/libgvpr.pc
/usr/lib/graphviz/
/usr/lib/libcdt.so
/usr/lib/libcgraph.so
/usr/lib/libgraph.so
/usr/lib/libgvc.so
/usr/lib/libgvpr.so
/usr/lib/libxdot.so
/usr/lib/graphviz/libgvplugin_core.so
/usr/lib/graphviz/libgvplugin_dot_layout.so
/usr/lib/graphviz/libgvplugin_gd.so
/usr/lib/graphviz/libgvplugin_gdk_pixbuf.so
/usr/lib/graphviz/libgvplugin_gtk.so
/usr/lib/graphviz/libgvplugin_neato_layout.so
/usr/lib/graphviz/libgvplugin_pango.so
/usr/lib/graphviz/libgvplugin_xlib.so