Add Github workflow for updating Github Actions. #4

	---
	name: Update GitHub Actions
	on:
	schedule:
	- cron: 0 3 * * 0
	push:
	jobs:
	update_github_actions:
	name: Update GitHub Actions
	runs-on: ubuntu-latest
	steps:
	- name: Checkout
	uses: actions/checkout@v4
	with:
	ref: bugfix
	- name: Setup Python
	uses: actions/setup-python@v5
	with:
	python-version-file: .version-python
	- name: Setup git
	uses: fregante/setup-git-user@v2
	- name: Generate token
	uses: actions/create-github-app-token@v1
	id: app-token
	with:
	app-id: ${{ secrets.TOKEN_APP_ID }}
	private-key: ${{ secrets.TOKEN_APP_SECRET }}
	- name: Submit pull request
	id: pull-request
	uses: peter-evans/create-pull-request@v6
	with:
	token: ${{ steps.app-token.outputs.token }}
	commit-message: '[Bot] Update GitHub Actions.'
	branch: update-github-actions
	title: Update GitHub Actions
	labels: bot
	body: Update the versions of outdated GitHub Actions.
	- name: Enable auto-merge
	env:
	GH_TOKEN: ${{ steps.app-token.outputs.token }}
	run: gh pr merge --merge --auto "${{ steps.pull-request.outputs.pull-request-number }}"

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