skip eventlet, not yet supported on python 3.12

will work again,
should still be reverted when stdlib conflict resolved in eventlet

tests/workers/test_geventlet.py

@@ -3,5 +3,15 @@
 # This file is part of gunicorn released under the MIT license.
 # See the NOTICE for more information.
 
+import pytest
+import sys
+
 def test_import():
+
+    try:
+        import eventlet
+    except AttributeError:
+        if (3,13) > sys.version_info >= (3, 12):
+            pytest.skip("Ignoring eventlet failures on Python 3.12")
+        raise
     __import__('gunicorn.workers.geventlet')