**Description**

It would be useful to have labels being a templated field in KubernetesPodOperator, in order for example, to be able to identify pods by run_id when there are multiple concurrent dag runs.
airflow/providers/cncf/kubernetes/operators/kubernetes_pod.py
service_account_name: str = 'default',
                 is_delete_operator_pod: bool = False,
                 hostnetwork: bool = False,
                 tolerations: Optional[List] = None,
                 security_context: Optional[Dict] = None,
                 dnspolicy: Optional[str] = None,
                 schedulername: Optional[str] = None,
                 full_pod_spec: Optional[k8s.V1Pod] = None,
                 init_containers: Optional[List[k8s.V1Container]] = None,
                 log_events_on_failure: bool = False,
                 do_xcom_push: bool = False,
                 pod_template_file: Optional[str] = None,
                 priority_class_name: Optional[str] = None,
                 termination_grace_period: Optional[int] = None,
                 **kwargs) -> None:
        if kwargs.get('xcom_push') is not None:
            raise AirflowException("'xcom_push' was deprecated, use 'do_xcom_push' instead")
        super().__init__(resources=None, **kwargs)
        self.do_xcom_push = do_xcom_push
        self.image = image
        self.namespace = namespace
        self.cmds = cmds or []
        self.arguments = arguments or []
        self.labels = labels or {}
        self.startup_timeout_seconds = startup_timeout_seconds
        self.env_vars = env_vars or []
        self.env_from = env_from or []
        self.ports = ports or []
        self.volume_mounts = volume_mounts or []
        self.volumes = volumes or []