setup: require a Python version with modern SSL features
This increases the minimum security baseline of Mercurial and enables us to
remove compatibility code for supporting older, less secure Python versions.
{
"conduit_uri": "https://phab.mercurial-scm.org/api",
"phabricator.uri": "https://phab.mercurial-scm.org/",
"repository.callsign": "HG",
"arc.land.onto.default": "@",
"base": "hg:.^"
}