[PYTHON-4303] Skip failing test in transactions/unified/mongos-unpin.json

Author: caseyclements

test/unified_format.py

@@ -1070,6 +1070,8 @@ def maybe_skip_test(self, spec):
             self.skipTest("Skipping TransientTransactionError pending PYTHON-4227")
         if "withTransaction commits after callback returns" in spec["description"]:
             self.skipTest("Skipping TransientTransactionError pending PYTHON-4227")
+        if "unpin on successful abort" in spec["description"]:
+            self.skipTest("Skipping TransientTransactionError pending PYTHON-4227")
 
         if "unpin after non-transient error on abort" in spec["description"]:
             if client_context.version[0] == 8: