Is your feature request related to a problem? Please describe.

Hi, I am wondering if there's plan to update the

spec/src/main/java/io/a2a/spec/TaskState.java

enum class to the one described in the latest specification 413-taskstate?

Describe the solution you'd like

Change enum from SUBMITTED to TASK_STATE_SUBMITTED, etc.

Thanks!

Describe alternatives you've considered

No response

Additional context

No response

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