SA14/Tests: Fix call signature to match reflection.Inspector.get_table_names

Croaks otherwise::

    TypeError: get_table_names() takes from 1 to 2 positional arguments but 3 were given

Author: amotl

src/crate/client/sqlalchemy/tests/dialect_test.py

@@ -92,6 +92,6 @@ def test_get_table_names(self):
 
         insp = inspect(self.character.metadata.bind)
         self.engine.dialect.server_version_info = (2, 0, 0)
-        eq_(insp.get_table_names(self.connection, "doc"),
+        eq_(insp.get_table_names(schema="doc"),
             ['t1', 't2'])
         in_("WHERE table_schema = ? AND table_type = 'BASE TABLE' ORDER BY", self.executed_statement)