Add fixture to skip pre 3.11

conftest.py

@@ -156,6 +156,14 @@ def jedi_path():
     return os.path.dirname(__file__)
 
 
+@pytest.fixture()
+def skip_pre_python311(environment):
+    if environment.version_info < (3, 11):
+        # This if is just needed to avoid that tests ever skip way more than
+        # they should for all Python versions.
+        pytest.skip()
+
+
 @pytest.fixture()
 def skip_pre_python38(environment):
     if environment.version_info < (3, 8):