chg: Make python 3.9 happy

tests/test_analyst_data.py

@@ -1,5 +1,7 @@
 #!/usr/bin/env python
 
+from __future__ import annotations
+
 import unittest
 from pymisp import (MISPAttribute, MISPEvent, MISPEventReport, MISPNote,
                     MISPObject, MISPOpinion)
@@ -119,4 +121,3 @@ class TestAnalystData(unittest.TestCase):
         self.assertEqual(misp_opinion3.object_uuid, note3.uuid)
         self.assertEqual(misp_opinion3.opinion, 75)
         self.assertEqual(misp_opinion3.comment, 'Agree')
-