message: add guard around 'test_arrow' test
diff: @@ -20,6 +20,7 @@ class TestDuckDBConnection(object):
  duckdb.execute("drop table integers")
  def test_arrow(self):
  + pyarrow = pytest.importorskip("pyarrow")
  duckdb.execute("select [1,2,3]")
  result = duckdb.arrow()
  