[202511] Fix duplicate key 'bgp/test_bgp_vnet.py' in tests_mark_conditions.yaml#22796

vmittal-msft merged 1 commit intosonic-net:202511sonic-net/sonic-mgmt:202511from

Pterosaur:fix/202511-duplicate-yaml-keyPterosaur/sonic-mgmt:fix/202511-duplicate-yaml-keyCopy head branch name to clipboard