Fix warning about SELECT usage in sqlalchemy

test/selenium/test_module_provider.py::TestModuleProvider::test_delete_module_version
  terrareg/terrareg/analytics.py:212: SAWarning: Coercing Subquery object into a select() for use in IN(); please pass a select() construct explicitly
    select = select.where(db.analytics.c.id.in_(id_subquery))

-- Docs: https://docs.pytest.org/en/stable/how-to/capture-warnings.html