support/testing/tests/package/test_python_gobject.py: fix flake8 warning

Fixes:

   support/testing/tests/package/test_python_gobject.py:4:1: E302 expected 2 blank lines, found 1

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>

support/testing/tests/package/test_python_gobject.py

@@ -1,6 +1,7 @@
 import os
 from tests.package.test_python import TestPythonPackageBase
 
+
 class TestPythonPy3Gobject(TestPythonPackageBase):
     __test__ = True
     config = \