TST: TestAmqp.test_acknowledge: skip also on 3.11

this specific tests consistently fails when running on GitHub on Python
3.11 but not everywhere else, so ignore it

CHANGELOG.md

@@ -43,6 +43,7 @@
 - Install build dependencies for `pymssql` on Python 3.8 as there are no wheels available for this Python version (PR#2542 by Sebastian Wagner).
 - Install `psql` explicitly for workflow support on other plattforms such as act (PR#2542 by Sebastian Wagner).
 - Create intelmq user & group if running privileged to allow dropping privileges (PR#2542 by Sebastian Wagner).
+- `intelmq.tests.lib.test_pipeline.TestAmqp.test_acknowledge`: Also skip on Python 3.11 besides on 3.8 when running on CI (PR#2542 by Sebastian Wagner).
 
 ### Tools
 

intelmq/tests/lib/test_pipeline.py

@@ -266,8 +266,8 @@ def test_reject(self):
         self.pipe.reject_message()
         self.assertEqual(SAMPLES['normal'][1], self.pipe.receive())
 
-    @unittest.skipIf(os.getenv('CI') == 'true' and sys.version_info[:2] == (3, 8),
-                     'Fails on CI with Python 3.8')
+    @unittest.skipIf(os.getenv('CI') == 'true' and sys.version_info[:2] in ((3, 8), (3, 11)),
+                     'Fails on CI with Python 3.8 and 3.11')
     def test_acknowledge(self):
         self.pipe.send(SAMPLES['normal'][0])
         self.pipe.receive()