CI: Run swh-graph tests with Python 3.7
Currently the tests are run on 3.5, which is incompatible with the way swh-graph is written:
SyntaxError("'yield' inside async function")
Migrated from T2027 (view on Phabricator)
Currently the tests are run on 3.5, which is incompatible with the way swh-graph is written:
SyntaxError("'yield' inside async function")
Migrated from T2027 (view on Phabricator)