Skip test_replace_fec for known issue (sonic-net#11409)

What is the motivation for this PR?
Skip test_replace_fec because it will cause testbed unhealthy on 3800 and 7260 devices (issue tracked in sonic-net#11237)

How did you do it?
Skip in conditional mark file

How did you verify/test it?
Any platform specific information?

tests/common/plugins/conditional_mark/tests_mark_conditions.yaml

@@ -617,7 +617,7 @@ generic_config_updater/test_ecn_config_update.py::test_ecn_config_updates:
       - "topo_type in ['m0', 'mx']"
       - "release in ['202211']"
 
-generic_config_updater/test_eth_interface.py::test_eth_interface_admin_change:
+generic_config_updater/test_eth_interface.py::test_replace_fec:
   skip:
     reason: 'Skipping test on 7260/3800 platform due to bug of https://github.com/sonic-net/sonic-mgmt/issues/11237'
     conditions: