Update to 0.27

PR: 246933
Submitted by: Eero Hänninen <fax@nohik.ee> (maintainer)
Approved by: mentors (implicit)
Changelog: https://github.com/python-xlib/python-xlib/releases/tag/0.26

		https://github.com/python-xlib/python-xlib/releases/tag/0.27