Using label field while declaring Kubernetes agent gives a deprecation warning even when using yaml format

[touseef]

 [WARNING] label option is deprecated. To use a static pod template, use the 'inheritFrom' option.

 Is there a workaround or different way to specify the agent labels

Below is the pipeline script 

```

pipeline { 

 agent {  

 kubernetes {

 label 'sample-label' 

 yaml '''

    apiVersion: v1 

    kind: Pod

    spec: 

      containers:

        - name: shell

          image: ubuntu 

          command: 

             - sleep 

           args: 

             - infinity

 ''' 

       } 

 } 

 stages { 

 stage('Main') {

 steps {

 sh 'hostname' 

 }

 }  } }

```