disable protected-access check for docstrings_test

PiperOrigin-RevId: 260040819
Change-Id: If6b6eae54f59db76818fe662c24a857d77100b9a

Author: dbieber

fire/docstrings_test.py

@@ -238,7 +238,7 @@ def test_strip_blank_lines(self):
     lines = ['   ', '  foo  ', '   ']
     expected_output = ['  foo  ']
 
-    self.assertEqual(docstrings._strip_blank_lines(lines), expected_output)
+    self.assertEqual(docstrings._strip_blank_lines(lines), expected_output)  # pylint: disable=protected-access
 
 
 if __name__ == '__main__':