contrib: tweak import-checker to always use bytes for module names
We could go the other route and make embedded() return this as a
bytes, but then it would be harder to portably doctest, so I prefer
this option.
Differential Revision: https://phab.mercurial-scm.org/D5206
{
"conduit_uri": "https://phab.mercurial-scm.org/api",
"repository.callsign": "HG",
"arc.land.onto.default": "@",
"base": "hg:.^"
}