run-tests: deal with distutil deprecation
PEP 632 recommend the use of `packaging.version` to replace the deprecated
`distutil.version`. So lets do it.
{
"conduit_uri": "https://phab.mercurial-scm.org/api",
"phabricator.uri": "https://phab.mercurial-scm.org/",
"repository.callsign": "HG",
"arc.land.onto.default": "@",
"base": "hg:.^"
}