interface_dict = {"network_interfaces": {"bridge0": {"mac": "00:00:00:00", "pci_bus": "00x02"} } } 

---
- name: get network interfaces
  gather_facts: false
  hosts: localhost
  tasks:
  - name: register vm info
    community.libvirt.virt:
      command: get_interfaces
      name: "sno"
    register: vminfo

  - name: debug result
    debug: 
      msg: "{{ vminfo }}"

PLAY [get UUID] ******************************************************************************************************

TASK [register vm info] **********************************************************************************************
ok: [localhost]

TASK [debug result] **************************************************************************************************
ok: [localhost] => {
    "msg": {
        "bridge-f0": {
            "mac": "52:54:00:c1:45:c9",
            "pci_bus": "0x01"
        },
        "bridge0-f1": {
            "mac": "52:54:00:00:8d:3b",
            "pci_bus": "0x02"
        }
    }
}