GitHub Actionsのworkflow_dispatchでトリガーと同時に任意のパラメータを設定する方法

import requests
import json

url = "https://api.github.com/repos/S-S-T-Y/github-actions/actions/workflows/raspberrypi-test.yml/dispatches"

payload = json.dumps({
    "ref":"main",
    "inputs": { "my_hello_input": "hogehoge" }
})
headers = {
  'Authorization': 'Bearer ghp_XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX',
  'Content-Type': 'application/json'
}

response = requests.request("POST", url, headers=headers, data=payload)
print(response.text)

name: Raspberrypi-github-actions

on:
  workflow_dispatch:
    inputs:
         my_hello_input:
           description: 'hello input'
           required: true
           default: 'this is a default hello input'

jobs:
  raspberrypi-test:
    runs-on: [self-hosted, linux, arm]
    steps:
      - name: Run a one-line script
        run: echo Hello, world! > /home/pi/helloworld.txt
      - run: echo "hello, ${{ github.event.inputs.my_hello_input }}"

python githubactions_trigger.py