Block the new tests that don't run on 3.11.7 from doing so; attempt t…

…o force the latest patch releases of 3.11.8 on GHA.

.github/workflows/ci.yml

@@ -84,7 +84,7 @@ jobs:
         # with it. That means for the bulk of our testing we need to
         # stick to 3.9.
         # PyPy 7.3.13 started crashing for unknown reasons.
-        python-version: ["3.12.1", "pypy-3.10-v7.3.12", 3.8, 3.9, '3.10', '3.11']
+        python-version: ["3.12.1", "pypy-3.10-v7.3.12", 3.8, 3.9, '3.10', '3.11.8']
         os: [macos-latest, ubuntu-latest]
         exclude:
           # The bulk of the testing is on Linux and Windows (appveyor).

src/gevent/testing/patched_tests_setup.py

@@ -1214,6 +1214,15 @@ def test(*args, **kwargs):
         'test_subprocess.ProcessTestCase.test__use_vfork',
     ]
 
+    if sys.version_info[:3] < (3, 11, 8):
+        # New tests in that version that won't pass on earlier versions.
+        disabled_tests += [
+            'test_threading.ThreadTests.test_main_thread_after_fork_from_dummy_thread',
+            'tets_ssl.TestPreHandshakeClose.test_preauth_data_to_tls_client',
+            'test_ssl.TestPreHandshakeClose.test_preauth_data_to_tls_server',
+            'test_signal.PosixTests.test_no_repr_is_called_on_signal_handler',
+        ]
+
 if PY312:
     disabled_tests += [
         # This test is new in 3.12.1; it appears to essentially rely