tkn version is too old in the terminal and cause error when starting pipeline

[piggyvenus]

From the workshop terminal:
[r0bx9:] $ tkn version
Client version: 0.2.0
Got error when starting pipeline:
[r0bx9:] $ tkn pipeline start deploy-pipeline -r app-git=nodejs-ex-git -r app
-image=nodejs-ex-image --serviceaccount pipeline
Error: Internal error occurred: admission webhook "webhook.tekton.dev" denied the request: mut
ation failed: cannot decode incoming new object: json: unknown field "serviceAccount"
It worked on my local tkn (Client version: 0.7.1).
Please upgrade the tkn version in the terminal.