packaging: update tested with version
We have tested this with 5.3rc so let mark 5.3 as tested too.
# define Mercurial extension metadata for evolution
#
# Copyright 2017 Pierre-Yves David <pierre-yves.david@ens-lyon.org>
#
# This software may be used and distributed according to the terms of the
# GNU General Public License version 2 or any later version.
__version__ = b'9.2.2.dev'
testedwith = b'4.5.2 4.6.2 4.7 4.8 4.9 5.0 5.1 5.2 5.3'
minimumhgversion = b'4.5'
buglink = b'https://bz.mercurial-scm.org/'