pythongh-128116: Skip test_socket VSOCK testStream() on PermissionError (python#128120)

(cherry picked from commit cbfe302)

Author: vstinner

Lib/test/test_socket.py

@@ -499,7 +499,10 @@ def clientSetUp(self):
         self.cli.connect((cid, VSOCKPORT))
 
     def testStream(self):
-        msg = self.conn.recv(1024)
+        try:
+            msg = self.conn.recv(1024)
+        except PermissionError as exc:
+            self.skipTest(repr(exc))
         self.assertEqual(msg, MSG)
 
     def _testStream(self):