Fix: Create Schedule Workflow Pydantic Key Error

[philip-zhan]

Fixing error

pydantic_core._pydantic_core.ValidationError: 2 validation errors for scheduled_workflow_run_create
schedule_workflow_run_request
  Missing required argument [type=missing_argument, input_value=ArgsKwargs((<hatchet_sdk....atetime.timezone.utc))}), input_type=ArgsKwargs]
    For further information visit https://errors.pydantic.dev/2.9/v/missing_argument
create_schedule_workflow_trigger_request
  Unexpected keyword argument [type=unexpected_keyword_argument, input_value=ScheduleWorkflowRunReques...=datetime.timezone.utc)), input_type=ScheduleWorkflowRunRequest]
    For further information visit https://errors.pydantic.dev/2.9/v/unexpected_keyword_argument

Context: https://discord.com/channels/1088927970518909068/1331373228161237013
Related: #300

[mrkaye97]

thanks for the fix!